I would go with the helix down pipe and gruppe-s uppipe.

 

lol you always suggest the gruppe s up, and the helix dp.
ive got their up, and im satisfied with it. for that price its unbeatable. im not sure much about the dp, but im planning to get it soon.
gruppe s - thumbs up!

 

the perin uppipe is a good quailty product also the pde one. they also make dp too. both look great and perform good. i also had that sti muffler with the pde dp worked great. remember you get what you pay for.

 

The perrin up pipe is 225 and has no bung I believe. So thats one thing to desire or not

The Gruppe-s up- pipe is like 150 bucks and still is a great pipe. it does have a bung.


The Perrin Downpipe looks like a weapon of war and has 3 inch piping and looks awesome big$$ though

The helix has a bellmouth and would be less money and I am not sure of the diameter of the piping.. once again it seems there is some speculation on 3 or 2.5 piping and I have heard that the larger 3 inch is preferable for the guys who plan 300+hp vehicles. I would check out Gruppe-s as they sell them... I personally would go for this one if I were to get one.

The Vishnu up-pipe is popular too... once again I have heard almost no posts of up-pipes failing ever. Their downpipe is a serious peice too and its near sexy... big$$

The "you get what you pay for" axiom is a bit too overgeneralized here on this club IMO.