The MF1655 I found on Marketplace for cheap last week sold before I could go get it. I guess that is just as well.
I spent a few hours in the shop taping up wiring and routing wiring for the electric PTO and the lights.
I wanted to install connectors at the PTO and lights so that they can be disconnected to remove the PTO or the hood/grille assembly, where the lights are located, but I ran out of connectors. Ordered those, but they won't be in until Wednesday.
The next day, I decided to tackle the exhaust. The current muffler is a side exit, but that would fire directly into the side of the hood. The stock exhaust fires forward through the hood. I never liked that design. I wanted to make it go into a pipe and direct it below the tractor.
I welded up the old opening (I won't even show a picture of those **** welds, so embarrassing), and then drilled a new hole and welded on the outlet. Here is the new pipe mounted up and directing the exhaust down, with a turn out at the bottom. It came out fairly nice. I have some heat wrap somewhere around here that I need to find to wrap the pipe.

After that, I had to fire it up to see how it sounds and check to make sure everything works in the dash.
The tach worked, and somehow stayed programmed from a year ago, to read the correct rpm. Everything lights up as it should, the gauges worked, except for the oil pressure gauge. I think I know the problem, the stud to mount the sensor wire was loose when I got it, and I think it spun the wire off of it internally. I ordered another gauge, and I will return this one, once I confirm.
Here is the dash all with all the lights on. Not too shabby.

One more update, while it was running, I was able to see if my valve block stopped leaking. It didn't, so I tightened the new bolts holding the block together even tighter and it seemed to help a lot. I'm still not sure it it's fixed, time will tell.