... is are they a starter out there that ....has more power than the stock starter or as much power as the nippo starter from ARC?
If there was we would all already be using them on our high compression motors...(I looked...there is a Kawai starter out there that fits but no money savings or torque increase over HDBriggs))
As it is there are only three choices as already stated...
The "stock" starter... The Briggs HD twin starter ... and the "slightly" Heavier Duty Nippendenso starter...
Pay your money and make your choice...
The ARC wheel matches the pitch of the Nipp starter...
But either of the other two "combos" will work with proper set up and shimming..
(stock wheel/Nipp or Arc wheel/Briggs HD)