Well after about 2 years now of many persons on this forum and myself wondering how much WHP my 98 Itr would lay down, I have dyno'ed the R.
98 Itr with 75k, stock motor. Mods are:

-Comptech Icebox/K&N E2427/stock Upper Elbow
-OEM JDM 4-1
-SMSP 12" Test Pipe
-Buddy Club Spec 3
-Timing @ 17deg.

This setup along with Drag Radials netted consistent 13.7's@100mph at the drag strip and a Very Strong motor on the Road Course. I dynoed the car at http://www.hpworks.com. The owner says there Dyno is calibrated on the lower side also, as many will agree. It was 82deg F out side with 68% humidity.