well...what's been my experience with them, is get a reputable company (ex VIS) to buy your kit from. Some companies mold look-alikes, and they are sometimes cheesy.

when you put a bodykit on, 9/10 chance it wont fit perfect...like your OEM peice did. You have to bond-o it, sand it down, just 'touch it up' to make it look natural. some kits are severly warped, bent, or have ugly spots in them. i knew i guy that had to send his kit back to JTAUtostyle 7 times before he got one that somewhat fit.

also, beware that if you mismatch kit parts, make sure the body lines are similar if you dont, you might be in for a big surprise!

hope that helps...if not, post away.