In the spirit of posting VIN's with decoded information here are the three 3500HD's I've owned in the past:
1993 Chevrolet 3500HD 1GBKC34F3PJ108864
SPID label was illegible. VIN decodes to USA built, Chevrolet (incomplete vehicle), 14001-16000 lb GVWR, 2WD, 1 ton, 2 dr reg cab, 6.5 td, 1993 year model, Janesville WI plant. Appears to be original 159.5" wheelbase and no frame stiffener plates, came to me with a utility bed on it, ex-Waste Management Corp. service truck. Never ran the VIN to get the RPO codes as it was just a parts truck. Plain Jane manual locks, manual windows, non-tilt steering. Originally white but repainted yellow with orange stripe likely by Waste Management. Had very dark gray interior trim, darker than the regular light truck trim, more like the early 1988-1989 different interior colors. Automatic trans (4L80E) and A/C-equipped. In this picture it appears the grille and grille filler have been replaced with 1994-up pieces possibly after a crash.

1994 Chevrolet 3500HD 1GBKC34F1RJ112673
SPID label was illegible. VIN decodes to USA built, Chevrolet (incomplete vehicle), 14001-16000 lb GVWR, 2WD, 1 ton, 2 dr reg cab, 6.5 td, 1994 year model, Janesville WI plant. Appears to be original 135.5" wheelbase and no frame stiffener plates, came to me with no bed, title indicates former flatbed, belonged to a construction company. Plain Jane manual locks, manual windows, non-tilt steering. I ran the VIN to get the RPO codes, it actually came from factory in tan color (code 61U) as opposed to so many coming just plain white. Tan interior plastics and cloth seat as well. Manual trans (NV4500) and A/C-equipped. Had an aftermarket cruise control module added. Most of you here are familiar with this truck as the one I rebuilt and converted to a Vortec 7.4 and full new interior swap and eventually built it into a wrecker. In this picture "diesel" bumper appears to not be original equipment as we discussed earlier in this thread.

1995 Chevrolet 3500HD 1GBKC34N6SJ109913
I do have a pic of the SPID label but never bothered to decode it. VIN decodes to USA built, Chevrolet (incomplete vehicle), 14001-16000 lb GVWR, 2WD, 1 ton, 2 dr reg cab, 7.4, 1995 year model, Janesville WI plant. Appears to be original 159.5" wheelbase and factory frame stiffener plates, came to me with no bed, formerly was a wrecker. Power locks, power windows, tilt steering; Silverado style trim including chrome grille and composite headlights, but vinyl floormat. It actually came from factory in gray metallic color (code 8798) as opposed to so many coming just plain white. Gray interior plastics and cloth bench seat as well. Manual trans (NV4500) and A/C-equipped. Some of you may recall this is the truck I repaired the crash damage on and did a few other repairs/upgrades before selling it.

Richard