Took truck down to replace some gaskets. I ended up removing the balance shafts and replacing the camshaft and cam caps from a donor truck. Put everything back together and now it wont crank. I have spark and I'm getting fuel. Thought that I might have been 180 degrees out but I took the timing belt off and rotated the crank around and reinstalled the belt. Still the same issue. Even the distributor and put it on number 1. Any help would be appreciated