You've got 3 sizes of plow handle grip frames to choose from.
1. The standard size grip in alloy, steel or SS.
2. The .32 Baby Vaquero in steel or SS (it's 1/4" shorter on the bottom).
3. And the NV or FlatTop remake of the original 3 screw #XR3 frame in steel or SS (3/16" shorter space between the rear of the trigger guard and the front grip strap). These are made with the internal lock that can be eliminated with instructions found on this forum.
4. And of course for large hands there's always the Super BH dragoon grip or SS Hunter w/round trigger guard.
Any new model Ruger grip frame will interchange with your BH.
Which ever one you choose, if you buy new it will need fitting since they are supplied oversize and the steel one will need to be blued. So, much better to swap with someone for a used one.