440 rockers

I’m building a 69 440 for my 69 GTS, it’s going to be stealthy with as much aluminum as I can find and some other goodies.

69 block, factory steel crank, Stealth heads, CH4B intake, aluminum water pump and housing, .528/284 MP cam, AVS2 800 CFM. I had bought Comp cromoly rockers years ago but our basement flooded and before I noticed anything 5 of the roller tips got some pitting. The rest are fine. I went to order some new single rockers to replace the damaged ones but Comp had changed from the Pro Magnum to the Ultra Pro Magnum. So I bought a set of the 440Source aluminum roller rockers, spent a few hours getting the side clearances set, thinking I could get away with modifying the baffles in the factory valve covers but the (big and square) rockers hit the sides of the valve cover where they taper. Now I’m back on the cromoly plan.

My question is, can I get 5 Ultra Pro rockers to run with the Pro set or do I need a full set?