9" ford

Not sure on the yoke to axle centerline on the 9" compared to your 7-1/4. It may be the same (or real close) or it may be different. If it is different you may have to get a shorter or longer driveshaft depending on which way it is off. As for the axles it depends on how you want to go about it. If the Ford rearend is out of a car it most likely has the large (5 on 4-1/2") Ford/Mopar bolt pattern that was used on B, C, D, and E bodies. You can change your fronts over to the big bolt pattern also which opens up a world of fitting wheels. If you don't choose to do that there is 2 other ways to remedy it. Have the axles and drums drilled to the small Mopar bolt pattern if there's enough meat to them or you can give Moser's a call and have them build you a set of axles with the small bolt pattern. But be ready to dig deep in your wallet if you choose that route.

One other thing you may run into is the 7-1/4 axle tubes are only 2-1/2" diameter. Generally everything else has 3" tubes. With that in mind your U-bolts and shock mounts won't work so you'll need a set of them from a 8-1/4" or 8-3/4 rearend.