[TheReferee]

from my research on getting the C4.1 there is a difference between the outdrives, the b4.1 can use the gear diff from the sc10 so the gearbox is slightly different to the b4. which means you need the b4.1 outdrives which are different, as the vega uses a bespoke aluminium gearbox they may do a 4.1 or a b4 sized one, best to ask them that question