I plan to put a C4 tranny in my 66 Ford soon and was wondering about some things. A guy told my dad that there are 2 different kinds of C4's (which I never knew since I am all new to all this Ford stuff). He said there is a regular one and then one with overdrive. If this will be a everyday driver and also have some good power still under it (It's got a 302 under the hood so nothing major) then what one is better?
Any info on this tranny would be great, I looked around and people keep telling me (and sites too) that they both are good but I would like some more OPPINIONS.
Thanks a lot!

Shawn-