I bought some H2's on went to put them on my crew cab and they won't fit all the way onto my front hubs. I read that they fit on GM hubs without issue. Do they have to be machined?
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should fit no problems. Most GM 60 hubs I've seen are more "tapered" from the locking hub down to the WMS. Gets thicker at the base in layman terms.Went to Pirate after I posted here. A few have had to enlarge the holes, but most don't. I wonder why some hubs are larger on the GM d60. I know you have to on Dodge and Ford d60 hubs. I'm gonna change my last name to Murphy, I swear.

