I am getting close to reinstalling my driveshaft i have replace the 7-1/4 open rear with a 70 duster 8-3/4 possi rear, i will be using my 904 trans. That came with my 69 cuda with a 318 engine, i know i will need the driveshaft shorten, but will the rear yoke/u-joint fit the 8-3/4 rear now...