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With a throttle body like this one, where are you supposed to connect the vacuum lines to??? because the stock ones have, i think, 2 vacuum lines connected to the throttle body...
I was actually looking at a PRELUDE 68mm TB... Does that fit?
Other mods are type r pistons, jdm gsr internals, si ported head, si ported IM, and i might get upgraded cams.
You will want to do the cams before you deal with a bigger throttle body. I am running the stock body on my setup and it does just fine, so I think you can wait on that for a while.