Wonder if we are related........

 

Might be somehow 40s don't help either. I will say most are surprised that it later this long and it seen off road. But I don't just gas it and go, I take my time because I have a vulnerable gas tank for now

 

What turbo you thinking about running? You could use a large frame turbo and run low boost #'s, make big power. Its about air mass flow and not boost. The typical issue is if you make lots of boost at low rpm, that will typically kick out the rods due to high rod loading.

Get a 3 bar map sensor and some larger injectors.

The real issue is these magnums only have two bolt main, with no side skirts/girdle. Most new engines are designed that way these days.