I use to work as a loss assesor in the motor insurance industry and those photos and this thread are ringing (pardon the pun!) serious alarm bells!
Basically it comes down to one of 2 things.. Either
A) The car is a VERY good ringer.
B) A previous owner has gone to quite frankly ANAL lengths to convert it to 90 spec.
Incidentally the seats are from the run out edition circa 1991 and early 1992. I sincerely hope for your sake that it's the latter, but strongly recomend that you go over the car with a fine tooth comb to confirm it identity. Lastly shouldn't an 86 be mars red rather than tornado?