synchro

Having a bit of trouble with third gear when going slow slots in straight away when giving it a bit of stick it crunche's.Takes two goes to get it in or else you have to bash it in with force and goes in.Had a look at engine mount and its wrecked could this be causing the prob or gear box oil or...

here is a tall ask.....but need them anyway....and i dont have access to a toyota disc with all the numbers anyways i would appreciate if some1 could List (cut and paste even) the gearbox syncro part numbers for BOTH the TURBO EP82 C52 and TURBO EP91 C56 gearboxes ...the TURBO models...