power column with manual box??? can it be done?

I did this once. This exact same way. I locked a grip plyers under the hood and pounded it down with a hammer until I reached the manual steering box. The only thing, is, I was always wondering how much splines I was really driving on?????????? Perhaps Whitepunkonnitro could answer this question. ??? I since have been buying the "power to manual" adapter.
To answer your question, the amount of "spline" after the shaft has been extended is 100%
The inner shaft is peened on the steering wheel side, so that it cannot be slid out of the outer shaft completely.
The four nylon "rivets" everyone talks about are only nylon beads on the outer shaft. They have zero penetration or even dimples on the inner shaft. Their sole purpose is to provide a bit of resistance on the inner.
I have dissected these columns, and can guarantee with utter and complete certainty that there is absolutely no risk to man or beast associated with extending a P/S column to meet a manual box