t56 failure

So recently, I have been finding myself really having to give the shifter a hard push forward to actually get into reverse. The shifter goes into the reverse slot when moving in the sideways direction, but can be difficult moving it forward into the gear. If I go into any forward gear first...

So of course i finally get my car built and get to the dyno and its getting stuck in fourth gear when ever put under load. I'm pulling the transmission tonight so I can get it rebuilt by mid next week. Who sells a good rebuild kit that they can get to me quickly?