Will GM 200r4 work with factory floor shift location?

After disassembly it will look like this (see first and second pics). Then you get your trusty magic marker and mark the areas that will be removed. The GN governor has no material in the areas marked with the brown marker. The large (heavy) weight controls the low speed shifts at part throttle and the small (light) weight controls shifts at high speeds. The more you remove off of these weights the higher you will get your normal (part throttle) shifts and the higher the shifts will be at WOT. Be careful because you could end up with WOT shifts over 6000 RPM and depending on your build you may not want that. Also the weight of the car and your rear end ratio may also affect these shift point so it's always best to remove "too little" as you can always remove more later. I'll be happy with 5000 WOT shifts and 1-2 and 2-3 (part throttle) shifts around 3000/3500.

Since I'm not looking for the full GN governor shifts I'll remove most of the brown marker leaving some for more adjustment later if I decide I want higher shifts. You can always remove more metal but unless you have a welder you can't put it back.

Treblig