Please believe me..I'm not stirrin..but I've been in the trade, and m guessing a full gearbox rebuild (ONLY back to where you were, NOT any better) in a Dealer using Toyota original parts could be about $7500.00 plus. Can anyone check to see what the diff is between a std IZZ-FE clutch is and a 2ZZ-FE clutch is ?? You should be especially interested in diameter, spring stiffness, and friction type... Everything should be a minimum of 40% plus , if it's the same, or similar, you've may have a case for having a product not suitable for its sold intention... Good luck ....