Bachmann Silver Series Rolling Stock

[BurneyPacific]

 Being new to this hobby I have a Silver Series Evans All Door Box Car with out wheels. I notice there are 2 sizes of Bachmann wheels on the site. They are 33'" and 36". How do I know which wheels fit this car and for that matter which size wheels fit all the Silver Series rolling stock? Do they differ or are they the same?  Thanks, Robert

[Frisco]

They are both compatible with all cars. The 33" is used in most cases. The 36" are prototypical for larger cars like autoracks.