Footbraker here too. Stock driveshaft, 1330 front, converter joint in the rear to hook up the 9" yoke. I haven't looked at them in 18 years. Car has run as fast as 7.0x over the years. As above if crossing under the 7.0 mark, have a local build a good driveshaft. If I pulled the 570 HP motor out of the dragster and dropped it in the Falcon, the next thing would be to replace the stock shaft.