wastegate sizes please!

im looking to turbo my 318 valiant. its a 75 rv motor with a alum 4bbl intake, 454lift comp cam other then that its a bone stock motor. looking to see what size wastegate and turbo i should run. i was looking to run 10lbs or more. was looking at the h1c off the 1st gen cummins or the hx35. i have a 8.25 rear with 3.23 gears with a 727 3speed auto transmission. i would like to get a tail 38mm wastegate. good size? and intercooler? should i run one or not. do i need one? and fuel pump? imma take the manual one off and run the oil return there. what size electric pump should i run. and how many pounds do you guys thing this motor could handle on a weekend driver. the motor is like 75k miles btw. i know im asking a lot but i dont see anything online about turboed abody.