Regarding early MPC with Timken trucks:
As has already been posted, the trucks were modified to accept the needlepoint axles.
I'd have to look at one to be certain, I think they may have also been modified to use a plastic coupler locking arm.
Several early MPC cars are known to have come with postwar plastic trucks. I think the early 9150 Gulf tanker is one example.
I look for boxed MPC cars with Timken trucks. They are difficult enough to find to make looking for them interesting.
