steering column dims help!

[XXL]

I'm looking for some steering column measurements. Apparently '68-72 are different than '67... I need measurements off the one that has the collapsible shaft connected to the steering box.

The specific dimensions I need are from the base of the steering wheel (the outer collar just below the steering wheel) TO the beginning of the splined end that sticks through the firewall (there is a collar that connects it to the collapsible shaft I mentioned above).

Then I need the dimension for the splined part that sticks out of that end.

So far I've gotten two measurements and they were different enough that I'd like to get a few more from any of you out there with spare columns.

Thanks in advance,

Kenneth