Borgeson Steering Box and their Coupler?

Thanks for reply, I just got done changing the Bergman coupler for the Borgeson neither one would clear the long tube TTI headers in my 360 66 Dart. I had the headers pulled and reworked back 2016 when I installed the steering box and the Bergman. How much steering shaft length did you have? Mine was only 3 and7/16 inches.