my opinion on your motor selection.... if you only want 550, id stick to just building the 350, maybe stroking it to a 383 or even a 396. theres no reason to build a BB and only want 550 hp. just doesnt make sense to me.

fuck the gay shit and do EFI w/the 396 stroker and mate a viper 6 speed to the bitch and call it a day.