Ya i wouldn't upgrade it unless you have the money to put in into and are deff. going to keep the car for race or track purposes. If you need a new one, just do a swap. If your tired of the cheap paper backed synchros in our tranny's then i suggest upgrading to a better one or doing the rebuild and getting it double synchro although i can assure you this is very costly and will probably run you as much as the car is worth.