I don't have a corksport but I bought the CP-E full exhaust and quick pipe which was awesome; getting rid of the car so I didn't need to sell it with the exhaust. Let me know if you are interested. I haven't posted it on the parts forum yet.
the perrin sounds bad ass, its a 3 inch catless j- pipe back system system
for some reason i cant upload my pics so untill i get myin up here, heres one from protegegarage.com
i think it was worth everry penny, it sounds vicious
a few differences from the style i have from the one in the pic is my'in has the perrin name on the side and the tip on myin looks slightly different and of course not as shiney lol (but cleans up very well)