Thinking about getting my pistons and skirts coated on my HO. Is it worth the cost and how much lower can I go with jetting from stock?

you can go lower * * but you can only lean out an engine so much, after that perf starts to drop off and you mess up your engine. * * * *if the engine is stock right now, *take the cylinders and case apart and have em ported, and get a little head work done, you will gain more and you can run safer E.G.T's