Does anyone know anything about FHP # 561?

[Cobra Jet]

I'm trying to find out info on a 1993 marked FHP SSP. I'm being told by the Owner (Seller) that it was/is Unit # 561.

I thought all marked FHP's had a (4) digit identifier while in service - meaning, instead of "561" is it possible this is # 0561? Is that an incorrect assumption?

The car is a 1993 and here's what I have noted:

retains original BUC tags per owner
retains original speedo cluster
Owner says 2-piece VASCAR cable is on this vehicle
retains original spotlight
retains original oil cooler setup
appears to retain most if not all VIN decals (from what I can see from the pics I was sent)
Owner has original light bar (not mounted)
trunk release button is under steering column to left of wheel


The owner seems to be nice (via emails), but states he does not want to deal w/ "time wasters", so trying to get the BUC tag info, VIN and any further info about this unit has been not as successful as I had hoped. This is why I'm on here asking if anyone can offer up any info if they can, or if they know anything about this SSP from any FHP docs that some of you pros might have... He has sent me some pics of the car, it's in very good condition and needs some TLC, but, nothing major at all (ie: body is clean, straight, etc - while interior needs some TLC, but again nothing major - and engine bay is pretty clean despite the car having over 100k miles).

If anyone can help or add some info, it's surely appreciated.

Thanks!