Ordered from Glide this morning.
1.125 x 1.75 (shaft size x mounting port size) not length. My mistake on the last question.

I went ahead and ordered new strut bearings also. I don't have a vibration or anything but I have to take the shaft out already and don't want to do it twice. They gave me a deal and is adding in some swag to sweeten the mess I'm about to be in.

I am making that coupler tool myself. I had some scrap around and an old harmonic balancer puller I can modify to fit. Hopefully this comes apart easier than I am stressing over.