74 Duster, resto mod 6.4 front end rebuild questions

So the steering column has plenty of clearance and thankfully no cutting required to the tube. However i am using a manual PST steering box and adapter to go from manual box to power steering column but it still feels short. As seen in the pic below again will need to adjust pipe for clearance. I had to knock the steering column collar down the shaft to get the splines to be in correct positions for the lock pins to be inserted.
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As you can see i am using the PST adapter but without knocking the collar down its short, however shouldn't the collar be in a fixed position on the original steering column? Or is it adjustable? Any ideas on better solutions or if i ahve done something wrong
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The column body has a fair amount of adjustment. The bolts under the dash are slotted and the plate on the end that bolts to the firewall slide up and down. Could that make up the difference?

Can you slide the bottom of the column towards the center of the car to make more room for the shaft to pass that header tube?

Any issues with turning the wheel? The coupler is wider one way compared to the other and it might fit fine but crash when you spin it.