Originally Posted by family wagon
I'll wager "CARB restriction documentation" means papers that say "I understand this vehicle does not meet CARB requirements and cannot be operated in California; I'll remove it from the state immediately" etc etc. I had to sign something like that when I bought a couple old diesel-powered towable air compressors in California a few years ago.
You forgot to add the part about killing your first born, burning your house down and grinding rock salt into every piece of land you own.
It might also have a VIN block with the DMV. If you live in CA, I would pass on this one. I would hate to do a conversion then have a ton of trouble at the DMV.