For a Felpro true V12 complete gasket set with crank seals, and oil pan gasket I was quoted just over 200, this includes the V12 specific gaskets that can't be had by doubling a 351 set.
I can reuse my head gaskets, I may end up making the special gaskets, and just buy intake exhaust and valve cover gaskets. It would be nice if I could buy each gasket I needed separately, but not all of them can be had outside of a complete set.
The big hold up in parts are the pistons, I have yet to locate an easy or reasonably priced source for them.
I did get a military 1.5 ton trailer, M105 I think, to mount the engine on. I'll remove the bed and make some brackets to bolt the engine to.
Also look for some 19.5 6 lug Budd wheels and low profile tires to get it closer to the ground.
Grigg