And its a differnt T28 in each one of those 4 cars. The skyline one is only in the R34 and it has ceramic blades which suck for over 1 bar boost cause they break. The s14 t28 is not much better than the s13 t25. The GTiR and S15 have the good ones, however one is better for spool up and power under the curve, one good for peak power. I forget which is which.