There, there are some differences between the J-spec motor and the US spec motor, the main difference are the pistons, and in some of the older US spec motors cams as well...Other than that, for the most part, they are the same. As far as hitting 200whp, you will empty your wallet to some degree, but a lot less than you did with your last setup from what it sounds like.

As far as the EVO exhaust...if you like loud, it's not a bad way to go, but definitely be aware, with no cat...it's mad raspy.

As far as Intake goes...I'm a big fan of the ICEbox...it works well and sounds good while not being too loud.

Test pipe...well I'd get one if you don't need to worry about emissions, but otherwise a high flow cat would be a worthwhile investment and necesary with a set of high lift cams for best results.

Which brings me back to the whole 200whp thing....you will more than likely need to go into the head, assuming you don't want to do the bottom end. My suggestion would be a set of Skunk2 or Toda cams, you don't need to go too overkill, and in fact with only 11.1:1 compression, it would actually be detrimental to do so. Try like a set of Skunk2 Stage 2 cams along with their springs and retainers, that will set you back about 1100 bucks give or take. Then I'd look into a Hondata, an S100 will more than suffice for an all motor car. You already have a good header, then just look into a high flow exhaust, and yes anything that's actually 2.5 inches is fine, although that being said, also difficult to find on a budget. With a couple other litttle bolt ons that you'd probably do anyway, that should put you at or over 200whp...oh yeah, almost forgot...Tunning, lots and lots of tunning!!

Good luck...

Later,
Aj