Stock 360 with bolt ons - options

Thanks guys, the cam is just stock 360 spec as the rest of the block, idle is dead smooth. Not against changing cam and springs, will I see any power gains with a hotter cam on such low compression or do I need to start looking at pistons or head milling? Would like to avoid pulling the engine, I know I'll get tempted to spend way too much on it!
You already have headers and 4bbl. Cam and springs would really help, especially if you choose wisely on the cam specs.