I had heard that one was supposed to be shorter than the other. Now I have both I'm gonna have to see what if anything I can differentiate between them.
Update
I still have the 85, now also have an 83 D 250 down to a bare frame, body is in being "dustless blasted" as we speak.
I have the birdbath hood and a couple of cowls known for sure to have come off of birdbath hood trucks. Should have thought to compare them while both were in my hands. Also have the bird bath hood latch to go with it. The birdbath is going on the 85. My son has (2) bird bath hoods, one of which I know he wants to put onto his 89 ramcharger. I may get the other one he has to put onto my 85 down the road.