I bought two M12-1.25 x 70mm bolts to use as alignment pins for putting the tractor wheels back on my 1025. I hated to do it but I had to cut the heads off the bolts and then round off the ends of the shanks to make them smooth, not only to the touch but to make the wheels slip onto the shanks easier (kinda make shift lugs). That is how I made my alignment pins.
There is a spacer that bolts on to the axle to not only widen the stance of the tractor but provides lugs like most cars and trucks. I would think this would be a really good thing but because of the price tag, I will put it way at the bottom of my wish list. BTW; if anyone is interested, this is where I found them… Bro-Tek (Kubota type site but they also cater to JD).