70 duster with Borgeson power steering

Thinking of installing a Borgeson PS unit - but I have concerns about how much I have to shorten the steering column. Can somebody give me a measurement from the firewall to the center of the PS unit ( which should be straight away from the adjusting nut on the unit ) or to the end of the splined shaft on the pump. Thanks Reindeer...

Depends on what flex joint coupling you want to use.They have one that extends the shaft to reach the Borgeson box as it is not as tall and uses an original style flex joint. Bergman Auto Craft - Home of the Modern Muscle Car
I went with this one when I did the conversation but I am now changing to the u-joint style that you have to cut the column and pin or weld the u-joint coupling to the column Bergman Auto Craft - Home of the Modern Muscle Car