FWIW, just the other day, my machinist quoted me a price of $7500 for a Magnum-based 408 with iron heads and a guaranteed minimum of 425 HP/500 ft/lbs, plus a core. Thats complete intake to pan, with paint and balancing.

I agree with Zippy that an all new engine is better when possible but I do think over $10K for a stock bore, 400 HP 360 is on the pricey side.

The early cylinder heads were the ones prone to cracking; Ive been through 3 1996 and later Magnums, all with over 100K and the heads were fine.