273 Torque converter & transmission

I picked up a 1967 plymouth barra with no transmission but it had a 273 in it. I found a 904 transmission and I bought a brand new torque converter for that engine ( the only one I could get). My problem is that the splines are different on the transmission compaired to the torque converter and now nothing fits. The 273 torque converter is a 18 spline and the transmission is a 24 spline. I cant get a different torque converter and I cant find a 904 A/T transmission with a 18 spline? Any suggestions ????

THANKS !
Assuming your engine is a '67 model and the transmission you bought is good, just get a conversion torque converter. Any good converter builder should be able to make you one.