I believe '62 was the first year for the aluminium PG. The rear pump was used in these trans thru at least '66. In order to tell for sure if the trans has a rear pump you will need to remove the tailshaft housing,speedo gear,governor and governor support.
Behind the support you will find either a blue anodized plate or a gasket. The ones that use the gasket have no pump. Another way to tell is to drop the valve body and seperate the two halves and see if there are two check valves there. If there are the
trans has a rear pump. The check valves are spring loaded affairs that set in pockets in the valve body and are located
beside each other.
Gordy
