[Schurkey]

As said, the PRW rockers are questionable. However...is it the ROCKERS that don't clear the valve cover, or is it the polylocks holding the rockers in place? Generally, it's the polylocks, and it's easy to buy shorter ones. Then you don't need the valve cover spacers, which allows you to lift the rear of the engine.

Make sure the fan still rides OK in the fan shroud, the radiator hoses aren't kinked, and the distributor clears the firewall acceptably. If the transmission has the back-drive linkage up to the steering column, you'll want to assure that it still works properly--maybe needs adjustment.