340 or 318 turbo

I switch out the exhaust manifold from the 1967 that weighs about 50 pounds each to the 1972 they were at least 10 pounds each. And fits into the engine compartment a lot easier. Right now it's running independent exhaust all the way back, will change over to a Y pipe and remote mount the turbo. And run the intake up through the passenger side// And fabricate some sort of stand-alone oiling system for the turbo. I don't know the dimension of exhaust pipe I should run nor the intintake any ideas.