Classic/Antique Car Repair: 327 rebuild, stock appearance, aluminum intake

Question
Stock 372 in., 250HP, in "orginial" 65 Malibu Show Car needs rebuit. Block has 65k miles. Need more HP without changing stock appearance. Car has  2 speed automatic and 9 bolt  rear end. Advise on the right rebuild kit and block bore requirements to get most HP for the buck and keep the orginal cream-puff look and sound.   Thank you.  

Answer
Jeff;
Hi- well you have a small  327. so if I were you I would go .030  if you are going to bore it / or keep it stock- than you can look in the catalog from (summit racing) and there are a lot of engine rebuild kits in it. or you and just get new pistons for it and replace all bearings,rings,seals,etc. and than get a cam kit  for it .and have the heads sent out and new springs put on. and a aluminum intake with a nice 4bbl. carb and some hi out put ing. system and headers and you will have a nice street set up.than  have the tranny sent out for a h.d. rebuild, and replace the rear end.or you could go for a crate motor ?
buy as far as stock you wish to keep your motor. right