I'll reply to my own post! I started work before reading the two replies. It comes out very easily from below with the wheels turned as far right as possible. It comes out and goes in over the top of the right tie rod with the solenoid tilted towards the exhaust pipe. It's a direct shot with little or no twisting required.
Total time for the job once the car was jacked up was a little less than one hour. It helps to have someone (my wife in my case) hold the front end of the starter up while getting the two bolts started.

Used about a 2' extension with a universal on both bolts. It got me back in the vicinity of the transmission mount. It is hard to position the allen wrench to get a long breaker bar in the correct position to turn. It either hits the ground or the bottom of the car. (the car was too low at that point) I ended up breaking them loose with my half inch ratchet. I had contemplated running the back wheels up ramps to get the back end up before jacking up the front. It would have been much easier if I had done that but I had loaned my ramps out to a neighbor and they weren't handy. I'll definitely do it the next time.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13