How do I get my speedometer to work with a turbo 400

[SoonToBeStang]

Hi, i kept on breaking c4's so i switched over to a turbo 400. I would like for my stock speedometer to work. I have 4:10 gears. Is it as easy as buying a gm turbo 400 sppedometer cable and hooking it up to the speedometer? which cable for what model would i buy? and obviously buy a gear for gm trans right? any help is greatly appreciated on this matter. Thanks