Tips on buying an 87 GT(is it really a GT?)

[LincoConti87]

Well on sunday it looks like I will be driving about an hour and a half away to hopefully purchase an 87 GT. The seller did not have pictures but told me everything about it he could through emails. He says the car was a shell when he got it but that it was an original GT 5spd car which would be just how I want it and he put in a 84 GT T5 and 87 HO motor.Yea I know 84 T5 isnt the best but if it breaks I'll save for tremec

Anyhow I figured I should at least find out the cold hard factuals on how to make positive that it was originally a 5.0 GT 5 spd from factory. Is there any tell tale things I should look for without looking at the vin and door tag, and also whats the best resource for vin and door tag info that will help me determine. One resource I found listed a 87 GT with the same body code as an 87 LX hatch which would not help anything because it just means the car was a hatch and does not prove it was a GT. I just wanna make sure I dont get the wool pulled over my eyes for a 4bang GT body convert because I have seen plenty of them on corral and stangnet.

Would a foglight switch and harness be conclusive? Did all the 87 up GT cars come with the sporty type seats with adjustable lumbar and all that? Any of this kind of info would help.