Steering shaft length

[69SCSS]

Hey guys, ran into something interesting last night. I put the rag joint on the steering box, slapped the spring and the large washer on the bottom of the steering column, then went to install the steering shaft. I put the splined end on and I am 2" short! With the shaft flange on the rag joint, the splines are maybe engaged 1/4", maybe less. Were there 2 different length shafts? I know I can drill out the 2 pins to be able to lengthen the shaft, but how much overlap is there, and should I drill a new hole in the inner shaft when I get the right length and put in a new pin?

Thanks in advance... I'd really like to start taking the steps forward without the 2 steps back!!!