Well, my 1985 F350 Long Wheelbase Cab and Chassis is 10k lbs.
My buddies 86 F350 Short wheelbase cab and chassis 4x4 is 11k lbs and they had to get it DOT Inspected.
My spare truck is a short wheelbase cab and chassis that the VIN registers as 11k lbs...which puts me into DOT inspection.

The F250's are at 8,600 lbs, so I figured the F350 SRW pickups would be around 10k or a little less.

In Mass, the inspection is based on the VIN number weight.
If the registered weight haas been changed, I assume they would then use the registered weight for inspection purposes.

Swoosh, I'm thinking somebody converted your truck over to SRW using SRW hubs on the front end. I assume that truck used to be a dually if it has 5.13 gears....ouch!