i garantee you that there is no performance differnce between 2.25" and 2.50" pipe

 

Agreed. If you have 2.25" lying around, use it. If you have 2.5" pipe lying around, use it. On our engines, it won't matter. They just don't produce enough HP for it to make a difference. If you go larger than 2.5" you will probably see a decrease in the low-end torque, which is what these engines were designed for.

 

very well put rriddle3, and as far as the bolt on kits go ill give ya credit tpoeill for finding one ive only ever seen bolt ons for s-10's, but ur find should help alot of ppl out good job!!