another vote for pete lupfer at ridge reamer. pete's done half a dozen blocks for me, lots of heads, and lots of misc. stuff. I always check his work but always find that I never need to.

as mentioned he is not the cheapest. however, working with someone that I don't have to explain the idiosyncracies of mopar to is well worth it.

steve at "engine rebuilders" in northglenn is also an option. does not have every tool in the world but very affordable and very mopar-centric. Old school race knowledge.

good luck. wakeman