Here is a UM M32 Sherman M4 based tank recovery vehicle with mine roller. I started this about 18-24 months ago with the idea I'd use a Dragon kit for the hull, wheels and tracks and the UM parts for the, fixed turret, mine roller and boom. Set it aside until I decided which Dragon Sherman (M4 or M4A1) I was going to give up for the kit bash. Then I picked up a Heller M4 and was going to us it for Normandy wadder tank.
Looking at the Heller kit, I decided to use it as the donor hull and running gear. I have added a winch and seats to the inside Hull and "turret".
The mine roller parts are next up after I get the running gear installed. The UM parts for the recovery tank (turret, boom, mine roller) are "okay" and very usable. Not that impressed with the UM's Sherman parts (track, three piece transmission cover ,etc) compared to Dragon or Heller.