The engine mounts are stock pieces I purchased from Mancini. Since the mounts are not side specific, the mounting bolt is accessed from the rear side on the drivers side mount, which has plenty of clearance.
Since the mount is simply reversed for the passenger side, the bolt is accessed from the front but access is difficult with the oil filter adapter in place. The 3 mounting bolts for the oil filter adapter aren't easy to get to so the solution is the remove the welded on nut on the back side of the passenger engine mount. Then I'll be able to slide the bolt in from the back side (with plenty of clearance) and use a nut/washer on the front side. The picture below shows the interference of the engine mount bolt with the oil filter adapter.