I6 300/manual transmission swap from f150
 

I am looking at buying a 1979 e150 with a bad I6 motor and automatic transmission and also buying a 1986 f150 with an I6 and Manual transmission to swap into the van. Other than the shifter and clutch pedal, is there anything that needs to be modified? Does anyone know if the stock driveshaft will work?

thanks for any advice!