Project Frog Princess

#3 main is the one with the thrust.

I would not worry about the cracks, both heads on mine were.

I had already planned on running aluminium so I gave mine to a buddy that burned a valve in his 250K mile ram, he lapped the valves, thru a new set of seals, and bolted them on, it is still running 2 yrs later, no water leaks.