HVSS is the suspension type that's currently on the Tamiya Sherman. The late war type.
VVSS is the more common early Sherman suspension type.
HVSS means - Horizontal volute spring system. So I guess VVSS means - Verticle volute spring system.
Oh!
Thank you, bhop73 and Wozwasnt. [sm=thumbup.gif]
Now, I feel less ignorant.

It is a nice feeling.
Jason