best initial mods?
TIA.
-Hell Ride
Next step add heads, ported manifold, ported TB, cam, and a retune (or the L76/L92 kit with cam and a tune).
Note: the stock cat back system on 05/06 is dual 2 1/2" exhaust with decent mufflers (which is better then most car's from the factory).
Last (if you want more sound) do a cat back system with an X pipe or H pipe.
I went overkill with the Stainless Work full dual 3" setup on mine

For more specific's on your goat and how to mod it go over to ls1gto.com and start reading. Everything from how to reduce the vehicle weight to what parts are good choices and which parts are not so good...



