ok so I have an 89 RRC that i use as my trail truck. I would like to register it but it doesn't seem reasonable. All it would need is and exhaust...and maybe some window motors. I also have and early 89 classic that is in pieces, and an 81 classic that is also in pieces. I would like to put a 200 or 300 tdi in the late 89. what if I was to take the vin plate from the 81, hypathetically of course, and put in on the 89. would my emissions issues be solved? and what do you think? I have done diesel swaps before in series trucks, but not a classic. there is plenty of room in the engine bay, so it seems like a good project.