The "rotation" or position of the discharge "volute" on a universal, "SN"
supercharger, can be changed by removing the 1/2" hex heads. and just
turning the front in relation to the rear.  You don't need to take it apart.
The hole in the top center of the front needs to remain facing up, when
installed, for the sake of the oil pickup.  There are a lot of extra holes,
all the way around.
 If it was an original Avanti "MS" supercharger,  You don't have any extra
bolt holes, to do that.  You don't have all the bolt holes that lineup with
the Hawk mount, either.  Hawks and Larks had an "ML" version that won't fit
Avanti's.  Pulleys are different, too.
 Of course, holes can be drilled; but I think it would be better to leave a
stock "MS" alone, and get an "ML" or "SN".
 Type "F", (not "FA"), automatic transmission fluid, from Ford, is the
latest product that was tested and approved by Paxton; as far as I know.
It's what I use.
 An excellent site: http://www.vs57.com/ .
 Craig Conley at Paradise wheels has all the old Paxton parts, and services
them. http://www.paradisewheelsinc.com .
                           Mike M.