The throttle body isnt to big. Which kind did you get and does it have the C.A.S. on it already....if not you need a lot of help.

The type-r intake will work, I always use the next size up from what i have and my head is a b16a2 also. I have a 68mm throttle body with a skunk-2 intake manifold and the AEM type-r intake.

The only prob besides your crank angle sensor, and prob your radiator line, is that your stock intake manifold is smaller, so the best thing to do is a port matching before instal.