RE: My Pershing project
Welcome to the RC tank hobby! If you want just the stock parts, Mato toys is the best place to get them. If you want upgraded parts or decals, etoarmour is an excellent source for those parts. If you want the ELMOD, which will basically make your HL Pershing run like a Tamiya or even better, rctankwars is the best place to get them if you're in the USA.
The thread about suppliers list RCCommand as well. They have a lot of good stuff listed, but avoid them like the plague, until they resolve all of their problems, and refund people their hard-earned money.