@panteradoug knows better than I do, Just want to point out what I run into..
The two measurements I would keep Working from, at this point , would be the location of the universal joint (take measurements from the rear mounting holes to the beginning of the universal joint of the original ) I would try to have the same geometry of the 2 universal joints as it was… Also make sure when you start making the attachments for the universal joints that they are clocked correctly to each other and the power steering unit is in the center position, lock to lock. Also the height of the shaft where steering wheel would mount, to the bottom of the dashboard cut out. When I mounted the EZ System, I suddenly was 8mm to high from the column shroud and the dashboard… I needed to adjust the mounting points in the back “up” to bring the motor assembly down in the front.
Not centered
I still have the spacer I made to put between the mounting pads in the front but the angles would be all wrong.
Steering wheel would sit like on a tractor.. or Ferrari 308… and nothing would fit… Turn signal switch …
And one last thing… fiddling the bolts in from the bottom to mount the unit is a pain in the…you know what…
I would highly recommend to put studs in. It makes life a lot easier. You put it in and take it out 50 times… What a pain
once you’re done, you can put bolts in it, but for the assembly and figuring things out… studs!!