I want to turn my EX into an Si, but I dont just want to slap a sticker on it and call it good. I want to know what the difference was between the EX and Si in 94, and what I need to turn my car into an Si?
The only thing I dont want is AC (I live in WA we dont need it here)

1994 Honda Civic EX: D16Z6, All power options, Sunroof, stock 6 disk changer with stock upgraded AR (Acoustic Research) stereo (not sure if thats what came in all of them, but I have all stock speakers and they are all Pioneer with AR emblems on the covers. I am geting the Clear/Red tails, and have clear front corners.

I think the Si came with a Spoiler, but not sure what one...Or if it had LED's in the spoiler with no 3rd rear window brake light?