The T-5 has the nickname "glass tranny" for a reason.
The T-45 is basically a stronger T-5, I dont have any issues to speak of with mine.
The T-3650 has a multipage issue thread floating around here, it gets ugly. I personally know of 1 person with a bad T-3650 and its still relativley low in miles. Granted he beats on it, but I beat on my T-45 aswell and it has 100k. http://forums.stangnet.com/showthread.php?t=328655&highlight=3650+issues
Alot of people will say the T-3650 though. What year is yor car?
T-45 Good trans but notchy and has reverse problems
T-3650 I have an 03 3650 and it was rebuilt. Overall T-3650 is reaaly smooth and can handle power.
Really its all up to what you think and what your experience is with thses trannys. I've had the T-45 and now the T-3650, I personally like the 3650 10x better.
well the reason i asked is that i broke my 3650 my car is a 2002 GT and it started with 3rd and 4th gear and now 2nd has to be powershifted to work and 3rd and 4th are completely gone....ok so when i get me another 3650 which shifter should i use i dont wanna wear out the syncros again so any suggestions??