Michael. 2313 Report post Posted April 8, 2011 Hello, I after a ring and pinion gear set for 188mm Medium case diff, either 3.91 or 4.10 ratios, 4.10 would be best. If you have a complete E36 non LSD diff with these parts I may also be interested in that instead. Please supply prices if you can help. Thanks in advance. Mike. Quote Share this post Link to post Share on other sites