Factory 7 exhaust

for race tuned motors the great! if your looking to just get an overall improvment then go with fmf or pro circuit
 
Never had 1 personally.. but a lot of people seem to like them... my dynoport is awesome has enough bottom to tractor around, an just screems up top like no other pipe I've had.
 
All right bend pipes are awesome, it really depends on what you are doing really.
 
I have a Trinity pipe (made by the same company as F7), and it rips up top with plenty of usable power down low. They work especially well on heavily-modified (ported/stroked, BB, etc) engines.