Take a look at the newer Hoyt Tiburon,it is a 21" riser,uses Hoyt Formula limbs,It already has a plunger hole and the riser is cut far past center to help make a plunger set up work properly.My Buffalo riser in built out enough to where I just use calf hair side plate and rest.My Tiburon came with thick pads for use for shooting off the shelf or use a elevated rest with a plunger.I'm sure you could probably drill the riser for a plunger,but to get a good use of the plunger you would need to adjust it way off center.