Alright, I've got an HKS Carbon/Ti catback....now I need an uppipe and a downpipe that all matches up. Any suggestions? I want to get nice parts, but I dont want to spend like $550 for a downpipe. Any good ideas on which uppipe/downpipe combo to get? I do want a highflow cat to match. I heard that the HKS equipment (aside from the catback) sucks. One more thing...a local tuning shop is chargine $350 to install both...are they really hard to install?