Cool looking truck and welcome back to Datsun's, couple of things, that was a lot of work for the center bearing. replaced mine and believe the bearing with center mounts was less than $40 from RockAuto.
Those rims look cool, but definitely would suggest some longer studs as in the picture they look like they do not engage the lug nots all the way, not sure but the Nissan quest ones work good on a 240Z, guessing they will work good on your truck as well