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Were you able to locate the Budd wheels you were looking for in the AA forum? If not, you may want to contact the following person. He has a considerable amount of AA parts, or at least did until recently as he has downsized his shop. He is use to shipping a variety of items so would be a good canid...

It seems that there has only been one year that one can obtain hyd. brakes and a closed drive line and that being 1939. As far as I've been able to discern. One individual indicated that the 3/4 & 1 ton axles were the same and I would like to know if they both have a full floating axle or a 3/4 ...

Thank you. That helps to claify a number of items which will assist those of us attempting to convert to hyd. brks on our AA's.

Hi Rob, Do you happen to have a Hollanders interchange manual? It shows the differential you are talking about. It doesn't give spec's per say but it certainly lists a whole gaggle of other trucks that used the same diff. If may help you locate the spec's to set up the thing. I presume that's what y...

Does your 39 1.5 ton have hyd. brakes and a closed or open driveline? I had another individual indicate that he has a 39 3/4 ton and that it has the same axle. A check in Hollanders confirms that, so maybe it will expand the possibilities for finding a compatible axle for those who want to convert t...

Bruce, I have posted additional information on the transition from mech. to hyd. brakes under "juice brakes for the AA". Thanks to your input it would appear that the gained information will facilitate an easier transition for such a project. Not all is finalized as to weather or not all i...

Thanks to Bruce Wayne I have been digging deeper into this subject. As of today I have found two wrecking yards that have confirmed that 1939 was the transition year for hyd. brakes. Driveline transistion from closed to open appears, at least in Hollanders, to be 1940 and the two yards agreed. Leavi...

You're correct. I had not consulted the "green bible" and took a look when I saw your post Bruce. As I had been interested in only the 1 tons from 39-47, as they have the same bolt pattern as a AA, I limited my research to Hollander. My experience to date has been that the "39" d...

The post "chassis swap", just prior to yours, contains the info. on Hollander's Interchange Manuals that I posted and will assist you in researching these projects. Not inclusive, but very useful books packed with information.

Sorry, should have included the above in the first post.

Hollander's show AA wheels to have a 5 on 6 7/8" diameter wheel stud pattern and the 35 has a 5 on 8" diameter pattern. My 29 confirms the AA pattern.