awesome reply thats exactly what i needed thankyou so much

Hey guys i just signed up and the website is awesome. I need some advice on a diff swap however, i just bought a 1200 sedan and the hubs on the driveshafts are buckled so i figure the best thing to do is to replace the whole diff. I read the tech section and i feel my best option is the 120y borg warner diff with the 120y tailshaft to match. I tried to look into a thread explaining what is invlolved but i couldnt find anything... dont get me wrong the tech section is awesome i would still be looking for a standard 1200 diff today if i hadnt found this website, but id like to ask if anyone knows if it is easy as said? does it bolt straight in with the tailshaft? does the 120y diff have to be a 1968 BW model? does the 120y have to be manual?... sorry for the bucket load of questions but if anyone could help out with some info it would be greatly appreciated keegan