JBA Performance Exhaust 1830S-6JS 1 5/8 Header Shorty Stainless Steel GM Truck 5.0/5.7L with Carbur. JBA Performance Exhaust 1830S-6JS 1 5/8 Header Shorty Stainless Steel GM Truck. JBA Racing Headers 1830S-6JS 1 5/8 Shorty Stainless Steel GM Truck 5.0/5.7. JBA shorty headers are one of the best performance upgrades available for any application. Processing begins as soon as an order has been placed, therefore we cannot change, cancel or modify orders once they have been confirmed. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Exhaust & Emission Systems\Manifolds & Headers". The seller is "skidauto" and is located in this country: US.