I also have farm truck plates on my 57. The girl at the tax office initially said I couldn't use them without applying for the farm truck exemption, but the other more knowledgable employee there said it wasn't an issue as the registration for YOM plates was different. So it should't be an issue.

"Do not walk behind me, for I may not lead. Do not walk ahead of me, for I may not follow. Do not walk beside me either. Just leave me alone, you're starting to freak me out."

1957 GMC 150