Will GM 200r4 work with factory floor shift location?

^No, it's one wire lock-up, one for OD, '88-'95. They are just as simple, people wanting to sell a kit make it seem that way.

All you need is a toggle switch, and if you want it to kick-down, make a bracket, and install a TH400-like kick-down switch to the gas pedal. Done deal.