I drive an '00 Si (with a b16a2) and my friend just offered me a b18c1 block for practically nothing, he owes me a favor...

so my question is how much better will the 1.8L bock be? i know there is no replacement for displacement, blah blah..... but how much better will it be?

Is it a difficult swap? Does the b16 Head bolt right up? and how about the electrical systems? seems like since i'm keeping the head i shouldnt have to change anything, cept maybe the ecu. what ecu is better? i was planning on getting hondata anyway so would i need a new ecu then?

and one last thing. i have heard the ITR is not 'the best' car to turbo, since this is almost the same setup would it suck for turbo too? i have heard the b16 is good for turbo, so if i am getting turbo should would swapping the block be a waste of time?

i know its alot of questions but take a stab at whatever,
thanks