thanks for the info. maybe ill install the next time i have to remove the flywheel.The degree key goes on the crankshaft to line up the flywheel and crankshaft for timing reasons. From what everyone has said on here the last time this question was asked was its not worth the trouble.
Looks like I wont be installing it.I think Willy was being facetious - jokingly implying that it might do better reversed than it would in normally... but NEITHER do much. Unless your engine has a crap load of major mods that could use some timing advance (or retardation), the stock curve is just about perfect. If you go to extreme high compression, there is an advantage to retarding timing.