Well reason I ask this is because I have a lot of money just put into this 302 now. Well not TONS but I just bought a new intake manifold, new carb, all new hoses, valve covers, it has a big cam in it and some other things. Would kinda suck to just buy a big block and then have to start over again. Plus this is my everyday driver, I dont need a huge gas guzzler. Just something with a lot of HP but good for street and on gas. The 48 is going to have the big block in it....