piston change out?

how much dose it cost to replace internals on a 420a engine and also would you need to bore out the cylnders to put a good set of pistons in it. and how much hp would this allow the engine. I am not a mechanical guy so if i said something wrong correct me.

are you planning to this to make it fast? or to put a turbo on it to run more boost?

You would need a machine shop to bore it out.

It costs alot to replace internals. Its like $700 for rods and pistions.

i am planning to make it fast

without turbo this would be your option http://www.howellautomotive.com/Howell/Store/catalog/catalog/default.php?cPath=142_38_174&osCsid=ab9b6bf7a5e0b30e15c93452888798c1

fast n/a car.
http://forums.2gnt.com/dcboard.php?...&mode=full#1350