And if you end up grabbing a 383 crank, just use the hub, wouldn't spend the $$ on a balancer, the belt should absorb the harmonics (as long as everything is weight wise equal enough) not building a 2,500 HP nitro engine ya know, & I wouldn't be scared of 8 to 12 psi boost, use ARP studs & the good fel pros,... I'm doin same thing to my dad's duster..lol