318/360 heads,with thumper cam

If your willing to rering, hone and bearing job so you can mill the block. If the bore good enough for that you could step up to KB flat top I think kb 167 the block only needs a little off the top for clean up and zero deck it might need balancing with those. But will make easier to get 9:1-10:1 but you see cost quickly rises I still go by what said in your other thread get a low mileage 5.9 magnum I see them here in Canada for $500-$800 you just need rpm intake, your carb, your ignition, your front timing cover and accessories, a car pan and pick can't remember if magnum take 318 or 360 pan, bolt on your exhaust if you got headers and duals your only a cam away from 400+hp, stock cam 300+hp, deal with the torque convert weight.