72 GMC Sprint VIN/Cowl Decoding

As I understand it a 1972 GMC Sprint V-8 Custom with a small block could be an SP. I have since begun the search for a build sheet. Even though this car is 1 of 689 based on the VIN alone it could be one of the 258 estimated SP’s in 350-4 barrel form, no? Sorry it’s not original paint or wheels and no SP badge on the interior just GMC on the wheel, in case you are wondering. Anyway, I would like others to confirm my newly learned VIN and cowl tag decoding skills.

VIN: 5D80J2L5000440
Cowl Tag: ST 72-53680 L 00355; TR 704 A51 75 B; IC 5 369033 17070

1972 GMC Sprint, V-8 Custom, 350-4bbl, bucket seats, cranberry red, black vinyl roof, built in Los Angles as the 440th unit.

Is this really all I can tell without a build sheet? Additional options on the car are: console, round ralley/ss type gages, a/c, cruise, power locks, brakes, steering, turbo 350 trans, 12 bolt rear, air shocks, map light in the rear view. If anyone has a GMC Sprint SP with a small block or at least similar VIN Digits (5000440 +/- ) please send me an e-mail. Thanks.

Follow this link for a picture…please ignore the 1955 Pontiac parts.
http://www.putfile.com/dronk69