if you want a straight bolt-in, you'll need a small case (168 mm ring gear) differential. Small case differentials only came on 4-cylinder model BMW's, and are relatively harder to find vs. the medium case (188 mm ring gear) differentials. On the ti, I believe the only gear ratios available for the small case diff. were 3.45 (manual transmission) and 4.45 (automatic transmission). I'm not 100% on those being the only gear ratios available for the small case, so maybe someone else can chime in. |