2.5 to 3.0 Exhaust
When I bought my 69 Barracuda a few years ago it had new hooker headers and 3 inch exhaust. Probably one of the worst fitting exhausts ever. Had the cheap around the steering linkage headers, smashed flat on the driver side. Header collectors dragged the ground on a mild bump. 3 inch exhaust was just too big. Couldn’t keep it away from brake lines. I took it all off & trashed it. Went back stock. Low compression 360, so didn’t really matter.
Just an opinion…..