71 Dart get 408/ Trick Flow Heads....

Plus the cost of better rockers...most general roller rockers are not good for SR setups...but it seems to be worth it in the long run to go roller IMO in a race setup (even bracket race).

I’m not an advocate of “budget oriented” rockers for any build, so whatever I would have used for rockers on a SFT cam myself, would be suitable (imo) for a mild easy-on-parts SR cam.
So, that wouldn’t be an added expense if I were building it.
Something along the lines of the old Crane golds are fine for that type of build.