If you're interested in decoding the buck tag I have made a decoder for this site. See the link in my signature.

thanks, this is what it decoded as.

1FACP40E4MF176490

1532 = body & paint rotations #1532
LX2 = Mustang LX 2-dr coupe
LX = LX model/trim level
ET = SEFI H.O. 5.0L engine (E), AOD transmission (T)
176490 = 76,490th 1991 Ford scheduled for production at Dearborn Assembly
AC = manual air conditioner
HB = heated backlite (rear defrost)
SK
FB = cloth seating, low-back front buckets (F), Crystal Blue interior trim color (B)
MF = 1991 model year (M), Dearborn Assembly (F)
0605 = June 5th scheduled build date
210259 = Atlanta district sales office (21), 1991 special order #0259
2
176490 = 76,490th 1991 Ford scheduled for production at Dearborn Assembly
50 = 5.0L engine

Some service and repair work along with a tire and wheel change and we have it running and moving under its own power now.

Once on the lift we were very surprised at what we found. Somebody had pulled nearly everything except the engine, replaced all the bushings, shocks, painted the whole bottom side of the car and put it all back together. New steering rack, rebuilt and modified transmission, all new brakes, brake hoses, etc, etc. We put a brand new fuel tank, pump and sender in it and moved the battery back up front under the hood. It did have frame connectors and a magnaflow cat back exhaust that had been added at some point as well.

Wow! Nice catch! Keep up the amazing progress on the GA SSP. :)

Please do show us the interior... I'm merely curious.