Wheel sizes

Model Railroader Prototype information for the modeler
1

I’m currently working on several older car kits, and am replacing the supplied plastic wheelsets with metal ones. Need some help on clarifying what size was used under certain cars:

On 89 foot pig flats, are the trucks 70-ton or 100 ton?

On all-purpose spine cars, were the end trucks 70 ton and the center trucks 100 ton, or were they all 100 ton?

Thanks in advance.

2

On the 89 ft Flats , generally 33" wheels but some times 28 " wheels

on the Intermodal multi pack cars 33" Wheels on end trucks and 36 " or 38 " on the 125 ton trucks

on Spine cars they are generally 33" wheels on the whole car