I generally use the engine hoist to put in a 5.9 crank. I put the 7.3 crank in by hand just to give an idea. From what I've seen online the 7.3 psd's are around 920lbs. So probably 2-300lbs lighter than a cummins. I know I could have built this dude 2 5.9s for what the parts alone have cost for this 7.3. It is craziness.

You are absolutely right. The 5.9s will take alot of power and they seem to live nearly for ever if maintained. I've seen half a million plus mile ones that were abused and still ran decent. They still had cross hatching in the cylinder walls too.