Yes - the Hemi pan fits the B/RB. Mancini carries re-pops with either 3/8" or 1/2" pickup. The hemi pan is about an inch deeper than stock and has baffles. Its a big improvement over stock B/RB pans. I'm running one on a "B" engine.

That said, I don't believe it has the oil control capability of the road race pan.

With either of these (or any pan deeper than the stock 4 qt) I believe a K mounted skid plate is a good idea. My plate has done its job more than once... check and touch up of paint on the plate is regular winter maintenance due to scratches from spirited driving on less than perfect roads.