904 trans what convertor

the engine iam putting in is a 68 340 if i get a 1966 to 1978 non lock up 904 will i be alright ? i know i will have to get a shifter but also will have a slip yoke drive shaft money is a issue with me s/s only so have to go as cheap as possible is there any place that list trans numbers so i dont buy the wrong one ? thanks