510x12aXmazda

hey i been seaching on the form and found what my problem was or tihnk it is im not sure if its the pilot bearing or the throw out bearing.cause my car makes this annoying rattling noise when i pull it out of gear or rev it in netural.would you guys know what the problem is and how much would it be to fix it and how hard is it to do.im new to the car so i dont know nada on it. so any info or tips would be help full at this point.and if you guys know of any rx-7 shops that are speclicist in these car or problems.id like to get numbers or shop names. that would be around san jose ,califronia area .