You might find you have the old style rear end plate( That's what the toyota parts manual calls it, it's the plate that goes between your block and your flywheel). If thats the case you'll need to change that, if your unsure which plate you have look on toyodiy.com, the two styles look very different. If you have the wrong end plate you may find that that is all you have to change to make the new type starter fit, you may not have to change your flywheel.