7 1/4 axle shafts needed...

Demonracer said
Check the diameter of the axle flange to make sure there is enough metal to hold the studs securely when redrilled. Some of the 7 1/4 axle flanges aren't quite wide enough. Just a thought to possibly save time & trouble.

A very big thank you to DemonRacer for offering up such awesome advice ! ! ! That's a timesaver and lifesaver in one bit of advice ! !