the engine does rock at idle, so this is what im going to do, install a meg-shift exhaust, open plug gaps from 35 to 40, install an engine hold down strap, adjust the carb, hopefully i can get the engine to not rock as much at idle.

as far the engine or headers hitting anything i cant see where.. I crawled under the truck with it running and it still sounds the same.. plus my hearing sucks from working in the factory. Hopefully with some kinda exhaust it will stop or i will be able to track it down.. I guess im trying to compare it with a stock 318 rebuild, nice smooth and quiet.....

thanks for the replies..