I have had 4.11's for about 5 years now, however I do have a taller 6th gear, 0.56 as opposed to 0.62 which is what 6th is in BA/F T56's. Mine would sit on 1950rpm @ 100km/h, albiet an ED XR6. Here are the ratio's of the boxes.. BA/F V8 - 2.97, 1.78, 1.3, 1.0, 0.8, 0.62 BA/F Turbo - 2.66, 1.78, 1.3, 1.0, 0.8, 0.62 Late model camira T56's have ratios of 2.66, 1.78, 1.3, 1.0, 0.74, 0.5 Just clearing a few things up.