Micro-polished springs, Ti retainers etc.
Ferea 1.6 Nitrided exhaust valves.
Hollow SS intake valves.
TSP roller rockers.
TSP proper pushrods
Johnson Drop-in Lifters
ARP head studs/nuts
Uhhhhh...mmmm
PRC Headwork to something like 350+clutch at .650 blah
Should be enough to make 700hp if my cam/rpm/displacement/tune/etc are all happy.