Swap 904 to 727?

The cross members are the same for either. The 727 has a longer tail shaft and you will have to shorten your driveshaft.
Thanks. One other thing I am dealing with on this conversion. Finding the rubber motor mounts is easy but I can not find engine support brackets to fit on the 78 318 then bolt the expensive motor mounts to them. The only thing out there is that expensive kit from schumader. Am I wrong?