Auto to manual swap questions.

Ok here is the situation I have. I have a 360 with a 904 with a MP 2500 stall where the external balancing was moved internal when I rebuilt both. I also have a 318 that has a manual 4 speed, I think its a NP435. Since the external balancing was knocked off the converter can I use that on the 318? Than putting the manual transmission on the 360 should be go? Also I am not at all familiar with manual transmissions is there anything else I might be over looking as far as what needs to be done? Thanks in advance!