Need Advice, Suggestions

I really don't know, all this work was done in Delray Beach, One would presume that they put new u joints in it...cost me $150 for cut and balance..I didn't take the driveshaft to the shop, the engine builder did and he Installed the engine,tranny etc...

Seems you have the correct parts on the engine and with the vibration that bad i think i'd look to the shaft first as the cause. I'm getting the feel from what you've said that it's a pretty pronoused vibration and i doubt the front end work is causing it unless something was installed wrong or left loose.