Finally got to replace the lefthand MM tonight. Pretty easy, like Trailbus said.
What I did was to lift up the engine and take the old MM out. I needed to lift just a little more to get the new MM in. It was tight, but a little pushing on the MM to get the top stud in the hole and it popped right in.
Couple of observations:
1. I looked up my part number with EPC ahead of time. The 'Part Name' that the program calls out for WHAT I BELIEVE is the lefthand part is 'Insulator, Engine Mounting, Front' and part number 12361-61050 for a 3FE 80. This in fact is the righthand part. The correct part is 12362-61010 with part name 'Insulator, Engine Mounting, RH.
To summarize:
Lefthand MM (Insulator) 12362-61010
Righthand MM (Insulator 12361-61050
2. When jacking up the engine I started to leak a fluid. Lower pressure side power steering hose began to leak like a sive. The hose lost all it's elasticity over the years and was leaking around several cracks. Replaced the hose with some AutoZone 3/8" ID hose and I'm back on the road.
3. Tested the MM in High, Low, CDL on. All conditions passed.
Here are some pics.
1st: Old lefthand top, new righthand bottom.
2nd: New lefthand installed.