well u will get receipt from a shopkeeper whoz giving u the engine..so u can confirm it from rescue 15...whther it is stolen or not....and i think the charges for enginge changing number is btw 3500-4500..not sure. 
well i have two peices of 2zz-ge with manual trany..if u r intrsted u can call me at 0333-5793448
shahrukh shah.