I think you are going to be on your own figuring out mounting if you are converting to a dual manual master. Issue is the Packard manual master is mounted from the side by bolts going thru the casting and into the frame rail. All easily found dual masters today seem to be mounted via two holes thru ears on the end of the cylinder. In order to use that type mount in the original spot you will need to make some sort of L shaped bracket to mount to the frame which will have some thickness. In addition to the adapter bracket thickness add the mounting ears on the master and the combination will throw the center line of the pushrod way off from where it is at the pedal end attachment point. You will need to either modify the original pedal so the pushrod can be in a straight line or change pedal entirely.
Having said that there is a possibility. Another poster found that
ABS power brake recently started making a new combination toe board plate and suspended pedal for adapting a modern power brake setup to replace the BTV unit. It might be possible to fabricate something along those lines and instead of a power setup use the plate to mount the dual manual master and use a suspended pedal. You would still need to have the proper pedal ratio and stroke length though. The suspended pedal in the ABS item has about a 4:1 ratio for the booster setup while the manual systems will need 6:1 or more.
Not sure Kanter still sells the fuel tanks. Last I heard they had sold out their stock and were not getting more. If that is the case others have bought new repro 51-56 gas tanks from
Auto City Classics. Several on the forum are using them.
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