Steering Box Alignment

Happy New Year all,
I am currently in the midst of a few upgrades and repairs on my 71 duster 440 car. I have the motor out and figured it was a good time to replace the steering box with a short ratio, figured since its just a weekend car with decent power I can get away with 16:1 ratio cause I wanna be able to drive the balls of the thing and get it back to center. quickly, As it is right now I look like a 16 year old when I get the car squirrly cause you gotta chase the wheel back and forth so many times. Anywho, I have the old box out , I am going with a Universal joint and a 16:1 box form PST(unless someone comes up with a better idea)... my two questions are:
1. With the u joint should I weld it to the steering column or should I drill and roll pin it in two locations?

2. Alignment with the new box. Any tricks or tips on getting everything aligned on the column and pitman arm? Cause once the motor and headers are back in the car , as we all no there is no room for hands to gt in and remove/get everything realigned easily.

As always thanks in advance for any advice and help, hope you all had a great holiday!