Machine Work Required for Forced Induction

This is great feedback. Thank you all.

I knew my $5,000 was a lowball estimate on the engine, but I didn't realize that the machine work could be so expensive. Still, I'm in complete agreement that this would be money well spent. And if the engine ends up costing $8,000-$10k, it will still bring the car in under $20k total, be a screamer, and be a hell of alot more fun than all the cookie-cutters on the road.

I really want to go EFI rather than naturally aspirated, as daily driver status makes mileage important. A $1,300 difference in total cost is not a dealbreaker regarding my plan of forced induction.

Back to THIS question regarding block machine work...

Moper, what did you mean by "modify the oil system"? Can you be more specific?

Anyone got a good recommendation for a machine shop in SoCal (preferably in the Los Angeles area) that can do the work as specified by Moper? I'd like to have alternatives to the machine shop recommended by the local Mopar restoration shop.