Hi, thanks a ton for all your replies!

I may have to look into the fuel issues if I find the exhaust to not be a problem, i know the carb does look pretty old & dirty.

Mike P - There may be some validity to that... It looks like the shop that did my exhaust put some old used magnaflow exhausts on there (I asked for something cheap!), Once I fix the alternator I will find a place to take it to test that definately!

Dan J - The problem occurs no matter how fast I step on the accelerator. I could be on the freeway cruising with almost full throttle for 5 minutes, then the second the pedal hits the floor at any rate, it studders and starts backfiring etc.

Keep in mind the only thing I did to the engine when I transfered it was I put an electric fuel pump to replace the mechanical, took off all of the emissions systems (plugged all the old manifold holes), and put a new exhaust on.

Hope I can figure this out soon, so far only thing I can think to try specificly is the exhaust change!

thanks!
Eric