Now that does look good, it looks as if it was made for the car !
After you explained the fan arrangement to me on the other thread I re-assessed what I was doing because your squirrel fan arrangement is a better solution. I think the problem with the TC (and probably the S2) is space behind the dash. My CD/radio comes to within an inch to two of the chamber and none of the fan motors I have around to try show enough clearance. At a pure guess, I'd say the one you have would be too big as well, it looks like one I've already tried. (just the motor, I didn't have the fan itself)
There are shorter radios without the CD units which use SD cards or USB sticks for your own music and I have one of those in the Elan. If someone with an S2/TC is considering this conversion (and it's got to be 100% better than OEM) that might be a possibility because the CD-less radios are fairly cheap.
I'm quite envious of that, you'll be able to de-mist the screen without sitting around for 5 minutes whilst it warms up !
Brian