Yes thats what I meant but they do make a u joint that has the Universal fit premium universal joint combination 1310 and 1350 Spicer. as the drive shaft for the challenger had the smaller u joint with 904 tranny along with small end for rear end yoke , so I will need the u joint that works to adapt this 1310 an 1350 ,,the 25 spline I was thinking was for a 727 or 833 but will get more info about this as I planned on changing the yoke to tranny that is if it works out
