MRAP turret in an HMMWV?

Hello all,
So I just purchased a set of Frag5 doors and side armor and I'm now trying to figure out the turret assembly. I have an OGPK that will go on it, but is the MRAP version compatible on the HMMWV (M1151)? I heard the gear teeth are sharp on the MRAP version, and the BPTMU drive system is specific to it. Are there any other differences that might be an issue? Thanks

There are several different turrets floating around. Do you have the slewing ring? The black ring that is sometimes left in the truck. It acts as an adapter of sorts for various types of turrets floating around nowadays.