best parts to replace from the headers back
LT's are a must for n/a setups. If you plan FI then any tubular exhuast manifold will be fine though.
For most people they then go ORY or catted Y pipe (needs to match the headers). And a decent catback. Some poeple opt for duals, X or H. These generally require a bit more fab work and are not off the shelf.
There is no real "best" setup.
Lt's look at:
cheap ones - Pacesetter, Edlebrock
expensive ones (stainless steel) - QTP, kooks
TSP sell a nice Y pipe (ORy & catted) for the Pacesetters.
catbacks - hundreds, just do a search.
Might want to visit www.ls1sounds.com





