• Mandrel bent POLISHED 304L stainless steel tubing
• Proprietary JBA Firecone collector
• Extra thick collector domes
• 3/8" thick machined flanges with Oversized exhaust ports

Installation Notes

Instructions: Instruction Sheet

Estimated Installation Time: 5 hours

Installation Footnotes

JBA Performance Exhaust 31658S  Mid Length 1 3/4" primary 3" collector 4 into 1 design  polished 304SS 64-70 Mustang 260-302 SBF 351W fits with Detriot Speed Aluma Frame option

JBA Performance Exhaust uses a voluntary product identification program whereby all emission sensitive products can be identified by placing numbered labels in product packaging and listing corresponding numeric codes next to each part number. The corresponding numbers and explanations are as follows:

This product is Legal for use on 1974 and older non catalyst equipped vehicles and is considered a Replacement Part per California Air Resources Board regulations, as long as ALL emissions sensitive components are retained, including A.I.R., EGR, Heat Risers etc. Failure to retain any of these components, or use on any 1975 or newer catalytic converter equipped car would render this product Illegal for Street or Off Highway use in California, or in states that have adopted California Emissions regulations and may only be used for Closed Course Competition.

• Mandrel bent POLISHED 304L stainless steel tubing
• Proprietary JBA Firecone collector
• Extra thick collector domes
• 3/8" thick machined flanges with Oversized exhaust ports

Instructions: Instruction Sheet

Estimated Installation Time: 5 hours

Installation Footnotes

JBA Performance Exhaust 31658S Mid Length 1 3/4" primary 3" collector 4 into 1 design polished 304SS 64-70 Mustang 260-302 SBF 351W fits with Detriot Speed Aluma Frame option

JBA Performance Exhaust uses a voluntary product identification program whereby all emission sensitive products can be identified by placing numbered labels in product packaging and listing corresponding numeric codes next to each part number. The corresponding numbers and explanations are as follows:

This product is Legal for use on 1974 and older non catalyst equipped vehicles and is considered a Replacement Part per California Air Resources Board regulations, as long as ALL emissions sensitive components are retained, including A.I.R., EGR, Heat Risers etc. Failure to retain any of these components, or use on any 1975 or newer catalytic converter equipped car would render this product Illegal for Street or Off Highway use in California, or in states that have adopted California Emissions regulations and may only be used for Closed Course Competition.

JBA shorty headers are one of the best performance upgrades available for any application. Hot Rod magazine rated headers as one of the top 10 power parts installed on a vehicle. JBA shorty headers are significantly less restrictive than the stock manifolds on a vehicle and dramatically increase the power and efficiency of an engine. JBA's original shorty design is an innovation of the old long tube header. The new shorty designs yield high performance gains that hot rodders and enthusiasts look for. With durable stainless steel construction that can survive the abuse of racing, towing, and daily driving, these headers can take a beating. With heavy duty features and proprietary technology, like the JBA Firecone collector JBA shorty headers have the capacity to produce more power than any other shorty headers on the market. Each system includes high quality hardware and thorough instructions for a professional no-leak installation. 1. Mandrel-bent stainless steel primary tubes- Best flow, durability, improved throttle response 2. Proprietary JBA Firecone collector- Race proven technology for maximum hp/tq gains 3. Factory style emission connections- Easier installation 4. Extra thick collector domes- Will not distort like lesser quality headers, no leaks 5. JBA Badge-Authentic JBA Quality 6. 3/8" thick machined flanges- Resists warping, prevents leaks, & easier install 7. Oversized exhaust ports- Increased flow, accommodates cylinder head porting 8. Available with two optional coatings polished metallic ceramic, titanium ceramic-increased corrosion protection, thermal barrier for lower underhood temperatures

Application Notes

JBA Performance Exhaust 31658S Mid Length 1 3/4" primary 3" collector 4 into 1 design polished 304SS 64-70 Mustang 260-302 SBF 351W fits with Detriot Speed Aluma Frame option