just purchased:
Gude Bored and port matched throttle body/IM chamber 67mm to 63mm instead of 60mm to 56mm. This will bolt right in on an H23 or it will require mounting a map sensor on the firewall if you want to use this with an H22 (like I did). I can include one for a little extra. Also includes brand new OEM TB gasket. I don't know if this will work with a 5th gen because a local guy tried to use it and he had a hunting idle and a CEL for the Intake Air Temp sensor (which is on the runners, not the IM chamber). I never got to look at it before he put his old one back on. $150shipped
i plan to port it out to euro R size.