where in the U.S.A to buy parts four coil overs

[H2OSB]

I was going to do the same thing ^^. There are nice German made f/r sets made for a MK1 Caddy that would be perfect, available on Ebay. The sets I'm referring to come with complete coil over struts for the front and shocks for the back. The shocks are meant for a lowered suspensions. If I did not already have my own coil overs, I would do that as well, but I would replace the springs with 80 lbs/inch springs from Summit Racing (very inexpensive).