i just bought a 8.75 355 suregrip with 489 case, the open end case in car now is 8.75 741, i know i will have to get the u-joint with 2 different sizes on it, but will i also have to switch the clamps that go around the bigger cup and where could i get joints and clamps if i have to switch them to? thanks is this cone or clutch type and if cone are they really that bad, and if i had to could i swap out cone for clutch it is 489 with 355 gears and i only paid $225.00 for it. thanks