Thanks for the why?
One further question, where will you source lug nuts with the correct conical seat configuration to match your stock
conical seat lug centric wheels?
I still don't understand why folks feel there is a need for guide pins.
Just jack the axle high enough so the weight is off the lug BOLTS, then exchange the wheels and use a tire iron or
big screwdriver to scoot/rotate the wheel until one of the lug bolt holes n the axle flange aligns with the conical
seat bolt holes in the replacement wheel. Scoot/rotate the wheel slightly until the 2nd lug hole aligns and then
replace all 5 or 6 lug bolts.
Super easy, no lifting of the heavy wheel and tire.
Learned this trick from tire guys who work on big 18 wheeler trucks all day that have very heavy Budd steel wheels.
They have tire irons (2 of them) and use the irons to rotate the wheel slightly until the lugs align and then tip the irons
up to slide the wheel on the lug studs.
Just changed a tire on my 519/3500 and the MB supplied jack handle worked nicely to align the wheel with the studs,
and also there is a tube welded on the RH rear of the spare tire carrier that works to add leverage to restow the spare.
Stick the jack handle in the tube and the added leverage makes getting the heavy spare tire back up into place
to engage the screw hooks really easy.
A little leverage makes the job super easy and you don't have to deal with the fulll weight of the wheel and tire.
Hope this helps,
Roger