Hello all, this is my first post. I own a '97 SE w/3800. The car has 151K, I bought it used a few years ago so I dont know its history. About a year and a half ago the transmission lost 3rd gear. When driving, the car will hold 2nd until 45-50 mph (depending on amount of throttle) and shift directly to 4th. If I manually drop down to 3rd it drops all the way back to 2nd and will not touch 3rd. I pulled the pan and found what I believed to be clutch material in the pan. I went ahead and changed the filter and fluid and hoped for the best. No such luck. So could there be another problem other than needing a rebuild? I've found on here that even though my car is a '97 it still has the 4T60E trans. If I get one from a boneyard is there a difference between other 4T60E's I should be wary of? And is there a visual difference between mine and the 4T65E that I can watch out for in case they try to sell me the wrong thing?