Have a question about replacing synchros in my gsr tranny. I have to replace my input shaft seal because it is leaking and want to go ahead and replace my synchros with carbon ones. How hard is it to do so? Ive done just about all the work on the car myself just never ventured into the transmission really. well not like this at least. was wondering the difficulty level and what all i really need to order besides the synchros? any advice would be greatly appreciated.