Can I really not use the driveshaft from my non O/D 5-main, 3-syncro gearbox when I do the O/D conversion? I think the book lists some fraction of an inch difference in length, which I would have thought would easily have been taken up by the sliding splines. Please edumacate me! Thanks, Roger Los '63 MGB, '64 MGB, '67 MGB GT http://www.rustyheaps.com