The thing that concerns me with the later style Nascar engines is the experimental rotating assembly combinations that they're using. I've seen massive rod lengths used, and TINY journal sizing. This means that if you ever needed to repace the crank/rods/pistons, you're up for BIG $$$ to get custom replacement parts.
It still looks like a heck of a deal ! Something inside me can see that motor with stack injection in a Kirkham Hybrid with a G Force GF5R straight cut trans