I'm looking for some really good grounding spots for the body/frame ground. What are some good methods to use when grounding the body/frame?

methods- shortest wire possible to ground and use thick wires for high power stuff.

Really any ground should work. the chassis(frame) would be the best.

im not sure but you could probably use the stock ground spot the main restriction would be that shoe string ground wire....they also make ground kits thats pretty much just a washer the connector sits on to make a good ground. but any thick non painted frame piece should work fairly well.

Gm grounded these cars anywhere and everywhere. Just make sure before you ground, you wirebrush and clean the area to make better contact. You might want to use that tar like goo to insulate the area if exposed to the outside.