info on the millenia s engine

hey there kids, ive got a few questions goin for ya. i drive a 1993 probe gt with a mazda kl03 2.5 liter v6 engine. questions are as follows

1) what is the CR of the millenia 2.3 liter miller cycle engine? now im not talking the effective compression ratio (which is really low due to it being a miller cycle), im talking about the actual ratio, like if you measured the bore and stroke and compared it to the combustion chamber.
2) what is the bore and stoke?
3) what all would it take to return a miller cycle engine back to an otto cycle engine? i know it would require new cams, is that it?
4) does the millenia s 2.3 liter engine have stronger internals than the millenia 2.5 liter engine? engines that are made for forced induction obviously have their internals upgraded from the factory to be able to withstand the boost. however i am wondering if this holds true for the miller cycle 2.3 liter engine. since the exhaust valves are open with the intake valves for a much longer time, a lot of the incoming air is lost which effectively lowers the compression ratio. since you would never really have the same high effective compression ratios of other forced induction cars, it would seem to me that maybe mazda didnt upgrade the internals at all. does anyone know the answer to this?

im really hoping someone has any ideas about these questions. thanks for any help you can give me.

:sun: Who can probably answer your question with authority is Wards Automotive. They tested the S engine thoroughly and named it in the ten best engines worldwide 4 years in a row. Also, supposedly 3 people in that office own or owned one.