I’d spend one weekend, yank the engine, disassemble it, gap the rings, put on mls head gaskets and if the compression ratio is between 8:1 and 10:1 reassemble the entire thing, then stab it back in. It’ll cost time and gaskets. If it’s above 10:1 I’d either push for the same as above but run it on e85 exclusively or a piston change to run 91-93 octane. That combination should serve you well deep in to the 10-12 psi range and like I said above a mild 360 with 12 psi on top will sneeze 500hp. Just work your way up in boost while learning how to tune it and read plugs.