Running Z's. I mean I hear what your saying about your car running strong with 100k+ miles on it. My Black Z has 92K miles and does 400lbs corrected RWTQ in 3 seconds on the Dyno from the Dyno sheets I have posted here, running on 17 pounds with the stock turbo's, injectors, intercoolers, timing etc. Topped out at 426rwtq ( corrected ). Zero tuning. The single Disc clutches where just getting killed to fast for me, so I have a Nismo twin disc now. Very good times bro.