hi guys, i cruised the wiki but couldnt find exactly what i was after, so i have a couple questions all relating to a stock a12:

1. what cam upgrade can i use?
2. how far can i safely bore it out to, keeping it as a daily?
3. should i stick with the a12 pistons, or will the a10 flat top pistons fit/ are the a10 pistons worthwhile?

i am already rebuilding this engine and keeping everything rather stock so i can easily pass rego for october. i have decided on motorbike quad throttle body carbs as i can pick them up cheap with a suitable manifold.

Also, in regards to port matching both the intake manifold and exhaust, is it worth its time??

thanks