If you can find photos of them installed on an RB, you can likely see if they'd clear everything on a B engine.
I'd look (left side) at front motor mount, dipstick, steering column, starter, clutch linkage, and torsion bars.
Rt side, I'd look at the fndr apron & torsion bar, but usually the right side is the easier side.

I did the opposite with some Hedmans on an RB in an early B, and had no issues except the collectors were higher than the T-bar crossmember.
Solved that with some S-bends for the exhaust.