Not that I have been particularly productive the last few months but I got some motivation today with getting my heads back from Bill at Xtreme after their extended Florida vacation.
Not cheap and a long wait but this is some mechanical art.
930 RR350 castings
42mm intake ports
39mm exhaust
53mm, 8mm stem Stainless intake valves
42.5mm, 8mm stem Inconel exhaust valves
AASCO springs and Titanium retainers
And of course twin plug
These aught to help make some decent power.