Leave me feedback.

I've been looking at flex pipes online and have found all diferent lengths. Which size would work best for a 3" system on our cars? Or does it even matter?

I work for a BMW dealership, but have a Mitsu dealer next door. I'm about to do a basic tune up (no timing chain stuff) on my 87 Conquest and was wondering what parts I should definitely get from Mitsu.   The only thing on my mind right now is a Vacuum Advance unit.   Any hints?   Thanks!

http://bravadowheels.com/wheels/sport/tribute/   any one do a render of a black tsi with these on it.