Ok if I understand : If I swap the complete rear axle ass. (with gears and everything from the Sam.) The only thing I will do is change the flange on the propeller shat. Now for the rear brakes, should I keep the sam Axle shaft with drums or put back my SJ-410 shaft and if so will the axle shaft from the SJ fit in the sam rear axle? I guess the best is to put all the rear end of the sam and drill new holes in the prop. shaft.