68 Barracuda original /6 with 4-Speed?

After turning my brain to mush searching and searching, I've finally figured that I should consult the experts!

Did Chrysler put a 4-Speed mated to a /6 in 1968? I am kinda fuzzy on this issue.

Here's the skinny: I just bought a 1968 Barracuda Fastback ( with a 360 and a 4-Speed ) that was originally a /6. I think the trans is original, but I am having problems finding anything in print that it is.

Can anyone out there in 4-Speed land help me out. Any and all help would be totally great!!

Thanks in advance,