Exhaust Pipe Diameter 273

Minimum I would put on any V8 is 2 1/4". This will be fine on a stock engine and give you wiggle room for adding more power later.

2 1/4" will support your average street machine, running 13s, all day long.

If your future plans include getting more serious, pushing into the low 12s, high 11s for example, don't buy twice, just get 2 1/2" now.