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Most of AC High Crops were Thomson conversions - you will generally see Thomson on forgings especially wheel centers. AC sold skid units direct to Thomson and they put their own wheels / axles on. Most of the Thomsons had 21" front rims which make them near impossible to get tires for. Exception was WC which had 36" rear and 16" on wide front, but my WD had 6.00-21 front and 36" rear. AC factory book on WC shows single front and 36" rear while WD and WD45 show 38" rears - note they used a 9 bolt center and a converter plate to 8 bolt hub on factory HC while the Thomson center bolted directly to 8 bolt hub. Also note most of these were Distillate burners with "K" motors - supposedly that was common due to availability / cost of fuel. Same is true for IH and some others I have seen down here. Later went to diesel when that became more common. Yes they are pretty rare unless you are in south Louisiana - but there was a truck with 5 in various condition headed up I55 Wednesday - 2 UC and I think 2 or 3 WC but not all complete. I have paid $200 to $400 for rough not running WC or WD - mostly stuck but with plow lifts; passed on one at $800 also stuck but otherwise complete. Have seen restored UC and WD and D17 asking $2500-3000 range - all Thomsons. 45's are supposed to be rare but so are WD's - probably best source of info is Norm Swinford - he has 3 good books out there on AC. And down here, I find a lot of 45's that are really WD's that someone put 45 decals on and I have 2 45's with wrong motors - so check that you are getting what you think you have - check s/n and trans shifter config and motor S/N or config (no access plate on right side of 45's) If they are down here in La, e-mail me and maybe I can take a look - I'm trying to accumulate info including serial numbers and details of configurations.
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