70 mph- I like the Parma Speed 8 it seems to be quite low but high enough to accomodate everything. I prefer the light version just to shave 1oz. off. Regular weight if longevity is a factor. Alot of racers are running the Protoform Ascari mainly in Mod it seems very cramped with that one. Those are the two I mainly see A couple fast guys run the Protoform Bently also, You make the call.
Good Luck and look into the Quad 12 conversion it worked for me