There were three mounting points that looked like a Heng Long rotation motor would fit, but that wasn't the case. I had to cut two of them off and relocate them a little to the left (green arrows). Had to trim all the areas pointed out in yellow. Got the new adjustable idler/brace installed from RC Tank Legion. Also thinned the front glacis plate along the purple line to make room for the idler brace. I cut some styrene disks and glued them around the relocated posts to give them more stability.