currently own the 1.6 16v BUT the engine has somit drasticly wrong with it loosing lots a oil and water.....

somone i know says he has a 2.0 16v red top from a cavi Gsi how do i tell if it is a Gsi and not from the Sri????(probably a stupid question.)

?????????Also will the 2.0 16v drop straight in the vectra and what will i need in terms of braking/suspension etc ?????