StingrayL82 and Leeann -- I can empathize, although I've never experienced anything as severe as what you two are going through. The VA sent me to physical therapy for my knee pain and it just made things worse. In your cases, physical therapy is important due to the extent of your injuries and surgery.
StingrayL82 -- There's some subtle but significant differences between the older LA and newer Magnum small block engines, which is what you probably ran into with your water pump, fan, and radiator. The MLP chassis originally had a 440 so I did a test-fit of the 318, transmission, and radiator to identify any potential problems before I got too far into things. (I ran into this kind of problem frequently with coworkers and customers when I worked a parts counter.)
Everybody -- Does your motorhome still have a fan shroud on the radiator? The shroud makes a big difference in keeping the engine at the right temperature. It makes sure the fan is pulling air through the radiator. Without a shroud, the fan pulls a lot of air from around the radiator rather than through it.
Don't quote me but I'd estimate a 20-30 percent loss of fan/radiator efficiency without a shroud. It's worse at idle and low, in-town speeds ... not so bad at highway speeds. (It's a matter of fluid dynamics/physics ... the radiator is a partial impediment to airflow.)
