Did they ever produce a slant 6 4 speed with a console in 1966?

I am wondering how butchered this car is. the body is stock. It looks like the original engine. The original buckets have been removed, but are available. It has a console and a 4 speed. It is a GT.
Will the fender tag show the transmission type, or do I need to find a build sheet? I will try to get some pictures tomorrow. I thought it seemed weird that someone would go tho the trouble of swapping in a 4 speed.