Hey guys... I have a bad "tunk, tunk" sound coming from my 10 bolt rear at low speeds (seems to be worst when turning - spider gear?). Someone recommended A-1 Differential, which is down the street from me at the 17 and Bell. Anyone ever used these guys? Do you have anyone else you'd recommend? I'm also looking for some great guy (or a shop) to install a replacement wiring harness to my 88 K5 Silverado. (Burned mine in a fun torgue converter/main seal leak flare up.) I have the harness (tough little item to find!), just don't have the space or time. At some point, I'll also be looking for someone to weld in new metal for my rusty rear clip near the tailgate and repair various rust spots. Again, no welder or time, so any leads are appreciated. If anyone knows good shops for any/all of these projects (or guys who want to take a break from THEIR K5 to work on MINE!), post or PM me. 2007 is the year of the '88 K5 resurrection, dammit! Thanks.