In addition to what Tim,s saying
Your search for a cab is NOT restricted to just 64 thru 66 1/2 ,3/4 and 1ton models.
All the cabs from 1/2 ton thru 6000 series (maybe even 8000)are the same.
The front clips were bigger and used a different trans cover.
Only Exception being the LCF Cabs Like Jolly,s
Reason I mention this is that you can usually get a Big Bolt With a good cab complete for a lot less, and then part out what you dont use
