Not to try and create a work log or anything, but the short answer is I guess I got lucky. All three of my cars: 91 mustang vert, 95 Eldorado, 95 MB 320SL had sticks in the center console. Each has a different angle and handle, but basically if you can figure out how to remove the handle (mustang had 1 screw underneath, Eldo had to cut leather off to find allen screw, Benz I don't remember it was so long ago) and you carefully remove the base and preserve maximum shaft length from the joystick, the shifter shaft and joystick handle mate up fairly well.

The joystick handle will allow you some leeway in enlarging it to fit the shaft and if its opening is too big, you can always create another shaft that fits inside the joystick and outside the shifter shaft (try the joystick's own shaft first).

To regain shifter functionality, I went with the simplest methodology - I created a seat inside the joystick for the inner push rod from the shifter. this seat must be located such that the joystick can slide down the shaft 1/4 - 1/2 inches. (With the logitech, I preserved as much of the joystick shaft as possible rerouted the wires out the front bottom of the handle, used a drill press to open up the joystick shaft and it matched up beautifully). Grasping the joystick with my hand resting on the base of the handle, I move my whole hand down toward the shaft till it stops, then I can shift into whatever gear, and removing the pressure from my hand, the joystick pops back up and the shifter locks into gear.

With some cars the spring action of the pushrod is enough to return the joystick back up to the locked (in gear) position, if not an external spring will be required. Keeping as much of the joystick shaft intact was beneficial in the Eldorado cause once I got it to fit over the shaft, I cut a 1 inch line 1/8 inch wide in the joystick shaft, tapped a screw in the least visible location on the shifter shaft and put the screw through the line(this keeps the joystick from twisting round and around or coming off and allows me to use the handle twist action as volume control).

Then I just routed the wires along the shaft, through the shifter, and connected the joystick brains to the handle (i.e., the bulk of the joystick electronics resides inside the shifter) routed the usb cable to the computer and programmed Joy2Mouse.

My hat is my mouse control (8-way HAT is a must), trigger is left mouse, thumbswitch on left is right mouse. My software (Joy2Mouse) automatically switches profiles depending on whats in focus on the screen. So I have profiles setup for most of the software I use often. Fore example, in RoadRunner the two leftmost buttons on top control GPS/Exit, video/music, and scroll up/down, two righttop buttons are play/pause, prev/next, and phone/radio select. My FreeDrive and Map Monkey profiles inlude map zoom, rotation, routing, etc. Explorer and FireFox have scroll, pan, refresh, favorites, etc. Other buttons will be molded into shifter console.

Hope that helps.