I have several questions in fact...i'll have the pleasure of someone supported me with the solutions...

1- I want to know which is the perect motor that can be hit in my car..?
2- which site i can refer to know the dianamics and the correct dimentions of my car..?
3- some friends adviced me to put the black 2500Cc motor which belong to BMW 525 model 96 or before in my car... is this correct or there is another motor that can give me more performance than the mentioned one...?
4- where i can find onlie shipping parts and turbo boosts for my car fo less price..?
5- i need to know i site for bmw that can give me the motor specsifications when i enter the motor number..??


I'll appreciate your support,
Thanks.