which calliber trucks do I get that are on amazon, i would prefer them in black, i saw something about the drgrees on it and got confused, also I saw a video and the guy said that the trucks needed a longer steel bar in them for the gear, any links or suggestions?
50 degrees and 180mm wide (wider ones) and you don’t need longer axels.
Are you dead set on calibers? If not, might I tempt your interest in a 200mm truck with dual motor mounts press fitted already?
https://psychotiller.com/product/surfrodz-177mm-rkp-trucks-with-dual-quick-66-mounts