[LMH]

My opinion, the engine is going to be the down-fall. Nothing wrong with a Cleveland but in a car of such replication, I think it should have an FE.
Five speed is great and really helps at freeway speeds but the T5 isn't known for it's strength. A TKO would have been better but as you point out, it was in the car already.
The diff ratio is too low for my tastes. 3.23 would be better and if I was a buyer, I would have to factor in changing that.

Now that I'm done tearing your car apart... it is still a Hi-Tech and that makes it one of the best. I don't mean to pee in your cereal, so don't take my opinions to heart.
I'll wait for photo's.
Larry