So looks like for the Mustang they used the make for the unit number in '84 and '85 and the model for the unit number in '86 and later. As in....

F = Ford
M = Mustang

Looks like the Crown Vic continued with the F designate, and Dodge continued with D, and and Plymouth continued with P, after '85.

Mick, Texas DPS may have made the change from F to M on the Mustangs during the 1985 model year. Here is one with a higher VIN and a #M5-xxx number:

http://www.specialservicemustang.net...info204948.htm

Hmmm...interesting.

FF188608 was shipped to a dealer in TX but there are no other records for that VIN, which is why nothing is showing up in the TX title search. Wonder what happened to that one.

There isn't much listed about 188603 on AutoCheck:

Vehicle: 1985 Ford Mustang LX (1FABP26M5FF188603)
Event date Location Odometer reading Data Source Details

03/18/1985 TX Independent Source VEHICLE MANUFACTURED AND SHIPPED TO DEALER

12/18/1991 TX 80,690 Motor Vehicle Dept. ODOMETER READING FROM DMV

03/29/1996 AUSTIN, TX Motor Vehicle Dept. TITLE (Title #:00022200050014898)


Using the Texas DMV site, the last title issued matches the AutoCheck report:

Vehicle Make: FORD
Vehicle Model: MLX
Vehicle Year: 1985
Vehicle Identification Number: 1FABP26M5FF188603
Title Issue Date: 1996/03/29
Title Number: 00022200050014898

The F5 numbers were the Baby LTD's they had. If you look at the description it says 4DR.

Tom

I just saw the car you were talking about and can't remember it, I do know that
M6-364 and 366 were Civilian color cars and not Black & Whites,.

Fox LTDs sedans were P39. I didn't see any in those lists.

Saw plenty of Panther LTD sedans.

There are 3 85's Lot # 16-18 on the list with the 85 &86 cars.

Tom

Ah...there they are...was looking at the wrong list. Those three are part of a batch of 60 (GF212804-GF212863)

Had Mustangs VINs on the mind...I meant to type FG212804-FG212863.