To those of you who race Spitfires at Watkins Glen and Mid-Ohio, which differential ratios would be better for each of those tracks, 4.10 or 3.89? Thanks, Marty -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://autox.team.net/pipermail/fot/attachments/20190716/0f510913/attachment.htm>