360 is a very good motor to base a HP motor from, really just a set of Inexpensive 10:1 sealed power or KB High compression pistons, decent induction (like a used perf RPM, 650-750Dp holley and a good ~224/230 @.050 cam) and a little port work from making right at or just over 400hp with more torque than a comparable Chevy or ford.