I too am shooting for 700 and I have way more than 12k invested. I'm somewhere around 35k. Build list includes pis 300/400s, hypermax rods, girdle, cryoed block and crank, Dyno proven modded pistons, push rods, springs, Dyno proven s468, 6.0 trans cooler, Bts trans, Dyno proven idm, air dog fuel(junk), billet stealth hpop(junk), and I'm sure I'm leaving some stuff out. Don't know what it makes yet cause fuel and oil are holding me up at the moment. Point is it gets very expensive to make big power and make it live.