Dart driveshaft needed. Any info would help

As long as the 727's are from slant sixes.Some say the 727 in a early A is a tight fit. I think a driveshaft from a 108'' wheelbase Duster with a 8 3/4 will still be too long but don't know for sure. More than likely you will have to have one cut to fit.
There is also some thing about what year slant crank you are using(pre 68 have a smaller crank register for the torque converter snout) Don't quote me on this but I think(not sure) the 727's have the large converter snout.Things to check into before you get too deep.