I am broke, so it all comes down to price, that's the cheapest set up I could price, plus I have a spare 8 1/4 I can start to rebuild while I still drive my car
notice axle splines... i dont know what these have in them stock so before you order anything check! the one under my 73 is the first ive played with and havn't even pulled the cover lol...
depending on what you are doing and your set-up, I would go with a 355 for the street if you are driving it all the time and getting on the highway. but I have no clue what you are working with. a very nice little set-up there