Sorry about the part number...I'll have to confirm tomorrow. It is likely the 3358 number you quoted and I hit one digit off.
It would seem as though Ford was the primary designer/supplier of the knuckles, brakes and hubs for the bulk of the Ford and Chevrolet CMPs. You will often find Ford's name on bearings, and Ford part numbers on castings.
There was a great deal of co-operation between the two during the design phase, as is documented in Blueprint for Victory by Bill Gregg. Some of it went the other way too. The Lynx armoured car had Chev brake system on one of the axles.
Remember that when it came to brake systems, companies like Bendix would provide the various models of braking systems, and companies like Marmon-Harrington would provide the various 4 wheel drive systems, Timken the axle systems, so there would have been some commonality just from the limited number of providers of engineering back then.
Often the Chevrolet parts manuals listed the FOrd part number as the primary part number, then after the description in parenthesis, would give the Chevrolet part number.
I am no fan of the chevys, so have to say that by putting Ford parts on a Chevy, you can only make things better.
