Ranger transfer case

[hehhehmule]

I've got an 83 ranger 4X4 and the transfer case output shaft just snaped off at mthe u-joint. Would I be better off to get a new transfer case or try to replace the shaft. Is there a particular year or group of years I should be looking for or are they all pretty much interchangeable. Also it is a V-8 conversion truck is there an easy manual transmission equivalent that will handle the added torque? The 4cyl unit was surprisingly effective for more that 10 years. Thanks.