I have a 93 civic with a b18b and my 3rd gear sycros aree going out I believe.. It grinds everytime I hit 3rd from a quick type of shift... Where would I be able to find sycros for my tranny?? Aftermarket or stock and about how much would it cost??

 

you can get them from gearspeed.
i think most of the time, the hub gets messed up, so you may need that, too.