Perhaps a clarification on "roller rockers". I am thinking of "roller tip" rockers with plain bearings on the shaft.

Rockers with needle bearings on the shaft are not needed on a MOPAR - even a pretty hot one. The shaft roller bearings are expensive and subject to failure.

A good quality steel, iron or aluminum adjustable roller tip/plain shaft bearing rocker should work well in your application. Just stay away from the low cost/cheapie aluminum rockers as they can fail early.