440 build for a tow rig/"muscle" truck?

Life has a way of interfering with projects. Believe me I get it. What part of GA did you move to? I am about 25 miles NE of Atlanta near Buford.
I'm in Augusta, sounds like we're not too far apart!

I think you're just going to great extremes for a tow engine. I would have just blueprinted up a stock 375HP 440 and been ridin by now.
Probably, I don't get many opportunities to build engines though so I wanted to have fun with it and build something with potential for further upgrades down the road which worked out well as now I'll be putting it in a car instead and gunning for more power vs low-speed torque/economy and longevity. Also the core I bought was high-mileage, completely disassembled and the parts sat since 1991 so what wasn't worn out was heavily rusted. All I ended up keeping was the block, crank and hardware.