hello all!!I'm new here .I just got a 67 caprice custom from my mom-in-law in Miami.Its in fair shape,runs and it all there.I'm going to rebuild the motor and want to give it some more power.Its a 195 hp 283 casting #389648 ,the heads are 3884520.What is the best way to get the most power out of this engine?should I put a 350 crank in it?are these heads any good for HP?I don't want to change out the original motor and trans.I'm trying to keep it close to original.Sorry for all the questions but it has been awhile since I did any hot rodding.I just finished a custom chopper.This car was an unexpected pleasure.Maybe someone could direct me to a thread on this .I searched for 283 but three characters won't work.Thanks for reading this..Eric