Four speed Max Wedges are rare as hens teeth. That's probably because they were only available in 1964. The reason for this was that prior to 1964 Chrysler was getting their four speed transmissions from Borg Warner. Although the Borg Warner T-10 four speed transmission was a fine unit, it simply could not handle the power produced by the Max Wedge engines. Finally in 1964 Chrysler came out with the A-833 four speed transmission. It was stout enough to take the pounding from Max Wedges and Race Hemis. As a result of only being available in 1964 Max Wedge cars the production numbers of these cars is fairly low. Totals for Plymouth four speed Max Wedge cars only came to 65 units throughout the different models offered. The Dodge totals for four speed Max Wedge cars only came to 61 units throughout the different models offered. For a more detailed break down of how many for each individual model you will need to get the 1964 Dodge and Plymouth books by Darrell Davis. The break down per models is fairly lengthy so I would prefer to avoid getting into the details here.