From Standard mine has losi front hex bolts to hold the wheels on, Losi 22 drive shafts as the kit ones have had some failures and the losi driveshaft are a straight swap, crush tubes, i made mine from old 4x5x10 bearings and broke them down to use the center from them.
I built mine wrong from day 1 regarding the rear wishbones direction, and the drive shafts and wishbones are straigher coming from the gearbox and when i notice and tried it the correct way i found it miles better the wrong way.
Grub screw the rear hinge pin in the hub.
I used a 8mm drill bit to drill by hand some of the center of the diff case to allow a shock o ring to be a better seal.
May layout has only ever been shorty and i have not found the need for changing it.