Will GM 200r4 work with factory floor shift location?

I agree REDFISH!! But if you're going to use a cable it's just as easy to attach it to the bottom of the stock shifter which would only require a small hole in the floor for the cable. There's a good chance you might even be able to connect the cable to the existing hole where the upper rod connects to the shifter. If you cut a slot for the shifter arm to protrude below the trans tunnel then you have a larger hole to seal (exhaust). Not sure if Trogdoor is building a street cruiser or drag car. I'm building a daily driver so exhaust fumes are a big concern.
Your so called "pitiful" depiction ain't bad. I'm still trying to figure out how to put lines on the darn pic!!!

Treblig