One last one and I'll shut up.

You can make your own steering stop nuts out of a couple of Chevy mag lug nuts.
Try to find stainless ones, but good quality chrome works ok.
(Chevy lug nuts are 7/16 - NF and so are the kingpin lock bolts.)

Cut them down to size and get a couple of thick AN style washers to go underneath.
A lathe is ideal for cutting them down, but a thinking guy using a modicum of care can do it with a hacksaw, file and square.