I am tight once again!

The main hiccup I found was in having to access the coupling bolts from the driver side inside the car, upside-down of course.
I had to take the boot off the firewall, slide it toward the steering wheel and then cut down an Allen wrench so it would fit thru the pass-thru.
Then it was simple.
Of course you need to mark BOTH shafts before you pull the old coupling.
Spray paint might work, but since you will want to spread the coupling to ease removal, you can just drive a slim chisel in to spread it and also mark the shafts.

Scott