[Suislide]

good god man, read the FAQ.

SR20 is lighter then KA because of aluminum vs. Iron block.

don't try to install the engine by yourself without first learning EVERYTHING there is to know about the engine.

do the suspension aspects of your car before swapping the engine. what's the point of having power when you can't control it?

KA vs. SR is a never ending debate that depends on what you intend to use the car for. if you're into track racing/drifting, then SR would be a better choice. if you're into drag racing, then go KA-T.

before you even buy the car, do alot of research and try to learn what you're getting yourself into.

and read the FAQ next time before asking any questions that can easily be answered by looking at it.