Considering Push Button Conversion...help

Does it matter which trans the cables and mechanism were originally attached to? (sorry if this is dumb, I have never actually seen the inside push button mechanism before) My dash was hacked to hell when I got it for a Walmart stereo :(, so I am going the custom route anyways.

Plus there's the part where you would have to have a trans case with the cable shift provisions. (different trans than you have)