Toejam is right. I would just add that part of the reason for people believing the OS carb is easier to tune is because it only has 2 needles and they Hyper is a 3 needle carb. So if you are less experienced with engine tuning there's that.
Regardless, here is some good reference material...
http://www.ofna.com/forum/viewtopic.php?t=4339 (pipe/clutch suggestion at the bottom)