Google: "flathead trans adapters" there's all kinds and combinations available. I have a 93 Mustang T-5 behind my 8-BA flathead.
^^^popular t5 to a flatty. Get them with the mech speedo. I think there are 6 speeds that will adapt but havent done any searching tho. 5 is plenty i think. Stocker 3 speed with od pulls 2200 at about 65 in the 49
thanks guys, this really helped, and yes I'm looking only for an automatic to go behind, don't care what as long as it goes down the road