RS500 v std Cossie ?

Just a few simple questions 1st
What boost did the std RS500 run as it came out of the crate?
Was the compression ratio the same as the std 3dr Cossie?
If you ran a 500 on 4 greens would it run higher boost then the equivalent 3dr?

And now for those who have driven a std 500
What rpm does the power come in at?
Running totally std spec - is the 500 be a better track car then the 3dr? i.e. power out of the corners? Lag?