Well got old motor out,man was the hypermax turbo a pain to get off....new motor installed but not hooked up still have to order some parts from hypermax.... Ever see a motor crack one head between every valve?

 

Sounds like alot of pressure from the turbo causing the heads to flex. It could also be excessive heat from a lean condition. (common with a forced induction engine not properly tuned) My suggestion is thicker castings/aftermarket heads and then stud everything with ARP studs. ...and then make sure you have enough fuel getting to engine.

Where's the pictures?

 

On the iPhone it's hard to get them to work have to wait till I'm on my laptop

 

as requested