Head Bolts: 20 - 1/2 -13 bolts. (10 are 2 7/8" long, 10 are 6 1/2" long)
ARP can put together custom kits with these sizes. Any ARP dealer can make this happen.
Valves/Pistons/Rocker Arms,etc available through
Egge Machine Company
Engine gasket kit available from Egge and Year One.