Automatic to 360/4-speed conversion

Thanks for info, folks. Maybe ValiantK360 will reconsider the stick shift option.
I have a 360 and 727 (was part of a package deal) for my 74 Dart Sport. If I don't bracket race it, I want to put a 4 spd in it for the street. The car has a clutch pedal; that's all I have now, for the swap, lol.
Sorry for the hijack...
why wouldn't you bracket race with a 4 speed ?