Tac Ultra grips

Hello all, I recently picked up a Tac Ultra FSHC in 45. Needless to say it’s a monster in the hand. With that said I’d like to find some thinner grip options. After some brief research I’ve found that there are some para p14 grips that could possibly work, but RIA is inconsistent with grip screw hole placement, so no guarantees there. Not a fan of the hogue finger grip so that’s out. Any other suggestions would be appreciated.