The 3rd gear synchros have given up the ghost in my '57 Chevrolet 6 cylinder. I replaced the original 3 speed with an original R10 borg warner from another '57.

Where would you guys recommend as the best place to buy a kit to rebuild this transmission? I have no idea how to do this but from what I have researched there are detailed instructions online and I'd like to try to tackle it myself.

Thanks