Modified Engine Mounts! What Do I Do?

I purchased an engine from a guy who restored an MB jeep to original. Someone before him had installed an F134 engine and he pulled to install an original L134. I bought the F134 from him for my '55 CJ5 project. Just realized the mounting for the L134 is different and the person who installed the F134 into the MB jeep cut the drivers side engine mount. I feel like I have 3 options and wanted / needed an expert opinion:

1. Swap front engine plate from the seized engine I pulled out of the CJ5 and install on the good engine (concerned about getting the pulley off and/or damaging the new-to-me engine)

2. Modify the frame to accept the modified mounting plate (lots of concerns here)

3. Get a better welder than me to re-modify existing front engine plate by welding a new bracket to the plate (concerned that the mount won't be strong enough since the old is two pieces of bent steel welded together)

Attached a picture of the engine mount. Any expert advice would be greatly appreciated!!

 

I too would swap the plate.

You are right to be concerned about getting the pulley off, but the risk of damage is pretty much limited to the pulley, not the engine, unless you have a puller that will work without damaging it.

I have a puller / bearing separator I got from Harbor Freight that I bought to pull steering wheels. It would probably work for this, but a new pulley doesn't cost much if you do ruin it. While it is off is a good time to install a new crankshaft seal, which is much easier to do with the engine out of the Jeep.

If you are determined to fix that plate it could be done by cleaning, squaring up, where it was cut and welding or even bolting on a piece of heavy channel iron for the foot. Would not look exactly right, but could be made to not look too bad.