Side hinges??? What are the hinges on a tank?
My bad - of course, tanks have no hinges.
I got off on seats because so many guys discover that CB/CL have seats/tanks with different lengths.
In other words, a CL tank is not long enough to reach the end of a CB seat.
Conversely, a CB tank will not work with a CL seat (seat is too long).
Apologies for any confusion......any 5-speed 450 tank will fit on any 5-speed frame, but the seat must be considered (re, CB/CL)- that's when the hinges might become an issue......if you switch to a CL tank, then you'll need a CL seat, and vice-versa.
Many folks prefer the less chunky lines of a CL tank.