here you can see the lock collars E.C.Sells 4.95 and I use them outside each axle bearing like in the pic to keep axle in place, both sides of wheel hubs and both sides of brake and sprocket hubs. In this build case the brake hub is against the bearing hub so it only required one side. A total of 9 on this setup where I usually use 10.
With the rear axle in and brake mounted and I am happy with all the I moved the the tranny pulley belt guides while I got it all upside down. Here you can see how I do my belt guides. I weld flanged nuts to the plate and then I simply screw bolts in for my guides.
Here is a good view of the flanged nuts welded in place. The setup also makes for a fast removal setup if you are in a hurry.
here is an overall view of rear axle in place, with tranny pulley and clutch and guides in place. Also notice the center of the running board rod is cut out as described in earlier details. This gives wide open access to everything.