Early 904 Tranny Cable shift
392Mopar,
Re what it is worth, I bought a cable-shift 727 SB tranny at a local show this summer for $100. I have seen others ask $100 for them locally. Shipping is the killer.
Before you sell it, insure you can use a later transmission. Most likely your 340 has the later larger pilot hole on the crank that the torque converter slips in. I don't know if any 340's had the earlier small hole. They probably used a spacer ring to match the '64 torque converter, otherwise they might have used a later torque converter w/ later input shaft (recall reading).