FLOOR MOUNT 904 AUTOMATIC SHIFTER CONSOLE, LINKAGE, SHIFTER SET UP

If this late model trans is going behind the OEM engine/crank have the shop research torque convertor differences. If you already have a later model engine/crank they should find a bushing in the crank that was added for early torque convertor fit. Remove it for later model torque convertor fit.
I don't believe a 66 and up long console will fit between pre 66 model buckets. 65 had a short shifter box instead of full length console. That box may work with buckets or bench in pre 66.
Hope this helps.