If you ditch the turbo, you will need better heads. With a 351 based block, you will need a new lower intake manifold as stated above, plus a distributor also( rods, pistons, and crank also). Also you may have to drill your heads for the larger head bolts a 351 uses. Plus with the deck hieght being taller, the turbo is also gonna move up if used on it. The 302 is around 8.2 deck height and the 351 is usually 9.5. The dart block route, everything will bolt right up, with the exception you have to use link bar lifters. As far as the oil pan,the instructions says stock wont work with front and rear 4 bolt main caps. Mine is a sportsman block with 2 bolt front and rear mains, but it has a moroso oil pan on it. They also have the larger 1/2" head bolt holes, which are blind btw, so no sealer needed on the head bolts. The instructions claim it can be bored safely to 4.185, so its for a lifetime unless you put a window in it. If you start with a 4 inch bore, thats alot of rebuilds. Even starting with a 363 with a bore of 4.125, you will have a couple of rebuilds. The cheapeast route would be to rebore your block (if you can), turn the crank, balance it, and put it all back together. Bearings and pistons, head bolts and gaskets, are all that you would need. You need to decide if your staying naturally aspirated or not first. High compression and forced induction will require e85 or high octance, and a low compression na motor will be lazy. If you dont use the turbo, you could sell it to offset the set of heads, then do a stock block 351 stroker combo.
