Ok
S.R.P.A. has some rules for the diesel classes.
8500 Class - Reg. diesel only 4x4
1. no blocks
2. no n.o.s.
3. no meth / propane
4. street legal
5.
REAR U-JOINT SHIELD
6. 26" hitch height
Few others but can't remember.
8000 Class Limited
1. Any Truck Gas / Diesel
2. (No Visible) weights (hint)
3. Mods. allowed
4. limited MPH (15mph)
5. 26" hitch height
And also a few others.
For $5 bucks they will send you a rule book of there pullin rules.
Let me know if you want one.