BadFastGTC - High Performance Heads and Cams
Johnny - Owner of PolyBushings, supplying suspension bushings, engine mounts, and antisway bars
Lugert - Supplying vinyl decals and nippo alternators
Mario - Resident parts whore
MidOhioMoparSource - A great resource for finding cars and parts from junkyards or other sellers in the Ohio area
Omni-Potent - A seller for traction inserts, L-Body cosmetic upgrades, and an excellent chrome moly transmission plate
Rbryant - Rich sells MSD plug wires for both stock fit and special applications
Turbovanman - Simon sells Aurora plug wires for both stock fit and special applications. He is located in Canada, so this can be a good source if you hate dealing with customs. Also sells HID headlight kits.
Tvanlant - Providing basic porting needs.
Moparzrule - Your source for ported exhaust manifolds.
8valves - 4bolt mains and other minor work
LaserXT1986 - Decals and signs!
ShelGame - Calibrations and scan tools!