Hey Coldiron,
I'm not sure what you are asking, but if you intend to reload "45, 308, and 243" cartridges, you would need die sets for each caliber and probably one shell plate for the 308 and the 243 and a second shell plate for the 45. I am not sure what a caliber conversion kit is, and if I missed the barn by 12 yards, please forgive me.
Best wishes,
Dave Wile