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

So, this is all great chat and ideas. I don't know the best way to accomplish what I want, but I like to try to formulate a plan if that is possible. Then parts can be slowly gathered.

Thank you all for chiming in. Feel free to continue - even if telling me my broke *** will never see what I want. That would be great motivation to prove it can be done.