904 Identification Help - 1967?

Does that mean I should be able to run an aftermarket converter like this (without any sort of spacer or adaptor):https://www.jegs.com/i/Hughes-Performance/512/27-25/10002/-1
The description for this particular TC says:
"1968 and Newer Mopar A904 (TF6) w/6cyl & 273cid/318cid V8 Engines"
but also says:
"All w/27 Spline Input"

Thanks for the help!