I have a ITR myself. I removed the engine and installed a B-20 bottom end from Japan, removed the stock pistons and installed the same size bore and raised the compression from 9:8 to 1 to a very streetable 12:0 to 1 with crowler stage 3 cams and spring kit all from crowler, with OBD II knockdown harness to a OBDI with a Hondata S300 fully programable on the fly when at the dyno, stage 2 clutch and flywheel from Excity clutch, also a DC sports header 4-2-1 with a 3" flange and a 3" race cat. I have 210hp to the ground with a tourqe of 145 lbs. This upgrade made this car a lot of fun and handling wow pulling out turns is very FUN!!!!!!. Off the line is fun as well, be sure to have some slicks on hand for the track. I haven't got a good time yet, still having a traction problem. 13.5 in a 1/4 not bad considering spinning in 1st and 2nd of the line with a 2.4 60 ft time. so there's my thought. Have fun in whatever u decide.