Seller notes

For LS motor swap on older Chevy, GM, Pontiac, Olds, Buick models For LS based engines (LS1, LS2, LS3, LS6, LS7, etc.) Header Type: Shorty / Short TubePrimary Diameter: 1-5/8 in. (42mm)Collector Diameter: 2-1/2 in. (64mm)Head Flange Thickness：3/8 in. (9.5mm)Pipe Thickness: 16 gauge (1.5mm)Material: 304 Stainless SteelFinish: PolishedNOTE:Will NOT fit LS4 enginesWill NOT work on standard SBC or BBCIf using larger 4L80E or older THM 350/400 automatic transmissions the bellhousing ears may need t...

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