Becky, If you have the opporunity, why not post a pic of what you have. That way, maybe someone will have what you need or can post a good idea of a fix. I have two older models left that will be going on Ebay in a couple of weeks. One of them might be what you need. In any case, the fan motors on either one are in very good condition, and would do you a good job.....BUT, before you go putting in a different one, I HIGHLY recommend one of the before mentioned repairs. In fact, during the late eighties, and early 90's, the meal top had a square hole approx. 12x12 in it, that had a peice of white plastic riveted and glued on with a sealer. If that is what you have, it not only would be cost effective, but a quick, "best" fix to go that way.
The motors can be replaced very easily, just hold your breath while you pay for it!
2000 390 Landyacht XL
1989 29' Excella
WBCCI #6673 jerry Hodge
Have no intention of arriving at the grave safely, but rather to skid in sideways, chocolate in one hand,throttle in the other, totally worn out and screaming
"WOO HOO, WHAT A RIDE!"