A forged 360 Mag piston that comes in around 8- 8.5:1?

Hmm, why not just bolt the blower onto a stock Magnum engine?
I could do that but I actually want to spend some money on a nicely done 360 engine. At 56 with my kids grown and gone and now some disposable income I'd like to do what I've not been able to afford to do in the past, and I want to do it right. I'm not afraid to spend some $$. Plus the 318 mag currently in may Dakota has 235,000 miles on it. The core 360 Mag I obtained is out of my brothers Ram and has 300,000 miles on it! It still ran good but consumed oil. Got it for free.