What would you build if limited to 372ci - with boost as an option

“Ok, thanks. I don't know much about the Nascar motors. wasn't sure if they need something special, seems everything I have watched, they all do the same thing, spin the dry sump and run through an oil heater.“

They do that because that’s their best option. You can accomplish the same thing a different way. The goal is to build some heat in the fluids before running it and there are many ways to get it done.