early a body radiators

ok i have bought a radiator from a 68 b body.. the part number shows its a 22'' 318 rad... its in perfect shape and i got it a good deal.
i have ran into the issues that you guys were talking about (well not really issues, more like something to keep me busy on the weekends when i get home ha ha ha)(i am deployed, and honestly kinda jumped the gun. i didnt even look to see what side eveything was on). my late model water pump has the outlet on the opposite side. so my choices are to get a early sb water pump? if i do that will need to get a early timing cover? or will the one i have work? do they make only cast iron water pumps?