The 1974 Pontiac Trans Am seen in the photo above belonged to one of the sales people, Gus.

It's a 1974 Trans Am with a 1973 front clip. So the headlights and grill are from a 1973 model.

The SD-455 designation on the hood usually means the car has the super rare Super Duty 455 CID V8. But that isn't the case here. According to the VIN number, this car is a 1974 Trans Am with a 400 CID V8. It also has an automatic transmission which makes it 1 of 2,914 made that year with that combination.

The VIN number says this car is supposed to have a 400 CID V8 that makes 225 hp.

At some point, the original 400 was replaced with a 455 CID V8.

According to Gus, this engine was recently rebuilt.

This car has air conditioning and power windows.

Gus' car is a legit Trans Am.

ST 74 2FS87 = Model year and body code: 74 = 1974, 2FS87 = Pontiac Firebird 2-door coupe.
N = Assembly plant: Norwood, Ohio.
071693 BDY (?) = Fisher Body plant sequence code.
TR 572 = Interior trim code: White seats, standard trim.
A51 = RPO A51: Strato bucket seats.
75 75 PNT = Exterior paint codes: Buccaneer Red, lower and upper.
10D = Build date: 4th week of October 1973.
WS4 = RPO WS4: Trans Am option.
BLK = Secondary interior color: Black, (in this case, the white seats are complimented with a black carpet and dash).
530681 = Fisher Body time code.