6 Speed manual--716.660 or 716.664
6 Speed manual--716.660 or 716.664
It's impossible to find out the differences between these two trannsmissions. The most that I've found is that the .660 is a 2006 model and the .664 is the 2005 model. I think these are for the V6 bellhousing which is different than the 606, but I'm drawn towards the newest 6 speed that I can find.