2000 Model A Economy Frame with suspension brackets only (drop axle style)
2100  Model A complete rolling chassis (drop axle front end)
2200  Model A complete rolling chassis (independent front end)

3000 1932 Ford Economy frame with suspension brackets only (drop axle style)
3100  1932 Ford complete rolling chassis (drop axle front end)
3150  1932 Ford frame with suspension brackets only (IFS style)
3200 1932 Ford complete rolling chassis (independent front end)

3131 1932 Ford Economy frame for Model A body with suspension brackets only (drop axle style)
3132 1932 Ford rolling chassis for Model A body (drop axle front end)
3133 1932 Ford frame only for Model A body (drop axle style)

4000 1933-34 Ford Economy frame with suspension brackets only (drop axle style)
4100  1933-34 Ford complete rolling chassis (drop axle front end)
4150  1933-34 Ford frame with suspension brackets only (independent front end)
4200 1933-34 Ford complete rolling chassis (independent front end)

4300 1933-34 Ford Truck complete rolling chassis (drop axle front end)
4350 1933-34 Ford Truck Economy frame with suspension brackets only (drop axle style)

5050 1935-40 Ford frame only with Mus II front crossmember
5051  1935-40 Ford frame only with IFS front crossmember (for coilovers)
5100 1935-40 Ford complete rolling chassis (Mus II front end)
5151  1935-40 Ford Complete rolling chassis (IFS with coilovers)

6100 1942-48 Ford complete rolling chassis (Mus II front end)
6161  1942-48 Ford Complete rolling chassis (IFS with coilovers)