www.jgenginedynamics.com

I talked to the guys there, and my only complaint is that they're pricey. It was going to be about 1500 for a bare block (minus 600 core... which I can't provide). Their long blocks are too pricey for me, and when I settled on going that route, buying used became the best option.

Spoon and Toda both make crate engines, but you'll have to do some digging for it (for a dealer and the cash they want).