We sell that 408. Start with a new 6.0 iron block, 4340 forged Eagle 4.0 crank, ARP main studs, line bored, Eagle 6.125 rods, ARP rod bolts, forged pistons ( usually Wiseco ), Speed Pro Hellfire rings, balanced, bored 4.030, set deck, all new bearings.
Feel free to call anytime for info.
Billy 817-703-3750