Stock vs. Aftermarket Tilt Steering Column

The aftermarket tilt is ready to go in. Your stock column has to be shortened. Either will work. The tilt columne wiring takes some time to figure out as it is not directly plug in, uses a GM swithch and wiring. It really comes down to do you want a tilt column

I'd be wary of the randal's set up. After market columns have the center shaft built in, with runners on the top and bottom, which eliminates any in and out movement on the steering wheels, plus the tilt feature is nice. On our original 64-66 set ups the shaft goes all the way from the gear box to the steering wheel. I'm asuming they have you cut that shaft down and fabricate a bottom runner in the column. Without a nut on the bottom to snug this up I see no way to take out all the slack, and with no thread in the middle of this shaft I see no way to mount a nut without some serious modification.
Bigger steering wheels make it easier to turn, but being power steering shouldnt really matter. As for the length of the after market column they have many many different lengths, and diameters available to suit your needs. Flaming river even offers on that colapsesin the event of an accident to cusion your impact.