Standard are M12x1.75 too..
The factory bolts have a tapered end to help the bolt locate.. I'll replicate this with the grinder and die set..
I asked the bolt man for the new ones to have a slightly longer shank so that there was no threaded section inside the sleeves.
Probably worrying about nothing but belt n braces etc
I'd deffo recommend locktighting the wishbone bolts as they work loose. I didn't bother when I built the buggy and had to re-do them all after they started to undo
.....Stainless is soft....