Depends on your budget and whether you're married to that crank. Heads I would toss in the scrap heap in favor of aftermarkets like 440source stealth heads or eddy rpm heads. For crank, if $ is no object, pick up a stroker kit, if you want to keep it stock stroke, have your machine shop check it out and regrind as necessary. For pistons, go with something with a compression height of 2.060 or greater, ie KB237, TRW 2355, etc. That with a little bit of deck milling will get you a zero deck, quench motor with about 10-10.5 compression. Add in headers, windage tray, deep oil pan, holley street dominator or edelbrock rpm intake and carb of your choice along with a recurved distributor and you should be set. Stab in a cam of your choice, really depends on how much hp you want versus how streetable you want it to be.