My guess is that It is an earlier model...and the general appetite is for more creature comfort and higher horsepower...
Can you get some more detailed pics of the leather seats and dash...cant remember If it has a.c.?
How are the tires and brakes...is the exhaust system original??
I can tell you that a mid engine generation was on the strategic horizon but a transaxle was the next logical update to the car which would help move that weight and center further rearward...after the 2000 Rolex win ....my sole dedication was to establish.. for history ...the VIPER
as the most...