[Bill Wells]

SPF serial numbers , "chassis " numbers , are located :

* stamped on the front cross member visible when hood is up and looking down
by the radiator .

* stamped on base of roll bar, inboard side

* stamped on hood hinges

there might be more stampings, I dont recall .

Also, it would be on a SPF vin plate ,on the firewall , or most likely inner fender apron on the passenger side near the firewall . However, these are easily changed or removed .

Also , over time the serial number alpha/ numeric identification and number
of characters changed as listed below from the Performance Unlimited website
:

SPF serial sequencing differs over time and is in 3 formats :

1. AC9CSLK1897AM1xxx. a 17 digit format with the xxx (the LAST 3 digits)
being the spf chassis number . these existed on cars
032 thru 577 as well as 579, 580, 582,583, 584 and 586.

2. SPxxx, a 5 digit format. used on cars 578, 581, 585, 587, 588, 589 and
590. the last 3 digits being the chassis number.

3. SPOxxxx, a 7 digit form. used on cars 591 and newer, the last digits
being the chassis number.

To further complicate things, as was stated , many states assign their own vins onto the car , hence title and registration ties to those, that are not even remotely close to a SPF chassis number . In Mich, mine is a long state assigned vin now re-classified as a 1998 a
"Assembled Roadster" .

To add even more confusion, some cars are running around with washed titles/reflecting serial numbers that would have been - or were - 1965 or 1966 Ford cars ( ie, 6R08Kxxxxxx indicating a calif produced k code engined 66 ford mustang convertible ) .

If the car you are looking at is in fact a SPF ( and could be as Sunset Red is one of their color offerings ) , it would appear that the serial you listed is an 'assigned' serial number . Hope this helps .

edited : added vin plate reference above and following :

My bet is that the serial you listed is a MICHIGAN state assigned vin as I just checked my Mich assigned vin and it is the same MI prefex with same alpha/ numeric similarities . My vin reads ( altered so that "X" equals a numeric) : MI023XAXXXLXXXX . Yep, it is most likely a Mich vin so you will have to check the other stamped markings to confirm the SPF chassis number .

Bill