New door jamb switch doesn't match

Thanks. I will measure the threads. It's confusing because on Rosevillmoparts website, they don't list the size. It just says large hole or small hole:

#4373185 SWITCH-DOOR PILLAR 66-94 Large hole

#4687214 SWITCH-DOOR PILLAR 66-78 SMALL HOLE


The R/T store has the #4373185 one but it says 3/8" so maybe it's a typo?

DCluley, Yeah I was sure autozone had one somewhere that was used on another car! If you find the box let me know. Thanks