Jim, could you give me some specs on that engine? Is it a late 70s 440? Cast crank? 452 heads? What power/ET?

When I calculated about $4500-$5000 for a mild 440 build above, I assumed cleaned up, ported 452 heads.

The 408 builds I have looked into would likely require aftermarket heads (meaning $$$$) due to the crack issue with stock Magnum heads and the fact that you'd have to get the Magnum heads machined for LA-style intakes anyway.