That IS a very nice trailer, does it have surge brakes?
I am glad you survived the trip, I rode up to OKC to get a M105 and look at Pinky and then drove Pinky back, all in one day (800mi round trip), THAT is on my list of things never to do again!
You didn't know that GM went all metric in the early 80's? (My 1982 S-10 was all metric), learning that bit of info is even better than the trailer for it will really save your ass someday when you are in a real bind and not 500yd from a Autokrap.
Sam R