Installation of Supreme Suspension 1.5 inch Spacers went very well today. Yes, indeed there is accommodation for the Stud Ends in the Stock wheel. The "hub centric" fit is very good. A point of concern is how tightly the stock wheel fits onto the outside of the Spacer. It is VERY TIGHT, such that one might think it is not correct.
But running the Stock Nuts down a little at a time, around in the Star pattern, and they draw up nicely. I think that 2 inch Spacers might have been too much. Edge of the Tire Tread would well outside the Fender, and would perhaps damage Paint without fender flares.
NOTE: My Stock 20 inch Black Wheels were ALL torqued to NO MORE than 110 ft/lbs, when I removed them. The manual says 140 ft/lbs.
Pics: Inside the 2021 model year 20 inch Black Wheels: these are not "indents" nor indentations. They are huge CNC Milled VOIDS with no concern about the stud ends hitting.
And, the stance is much improved. Handling is also improved-- more stable, steering not as light.
Oh, also-- Parking the truck, shifting to Neutral, selecting 4WD Low, back to Park and setting the parking brake will definitely hold the Hub from turning while torqueing, in a Star pattern, to ~70, then 100, then 120 and finally 140 ft/lbs with no problem. Wife was right.
.