1964 slant six atoumatic to a 318 manual conversion. does anyone kno wat i need?

i have a 1964 plymouth valiant that i want to put a v8 in. i also want to get rid of the atoumatic tranny and put a manual either a three speed or four doesnt rily matter to me. so does any one kno what year block and tranny i need? and anything else i would need?