7.25" to 8.25" driveshaft?

Center to center of the u-joint caps, look for any '73 & up duster/dart sport that had the 8.25 axle. The earlier '72 & down had 8.75 rears & an even shorter shaft, too short to
be correct by about 5/8", but use-able if you can't find the correct one. I've had some cut by shops, some good, some not so much. Proper indexing of the joint yokes and keeping
the yokes perfectly square upon completion of welding them is critical to having no vibration issues that won't go away no matter how well it is balanced after-wards.