Hmm,

I think I may be misunderstanding what you guys are saying....BUT...it sounds like:

Ben needs a door for his 91 hatch, which does not have door mounted belts. RIght?

OK. Spoon has doors for a different year, and they also do not have door mounted seat belts.
So,
THe only issue should be whether or not the doors actually fit, since they are for diferent year hatch.
AND
Spoon has both driver and passenger side doors in good shape, meaning that if Ben takes both, they will look the same, even if there are slight differences between the year models (assuming, of course, that they fit)

So...whats the problem? Ben, you found yourself some doors. Grats.