I have AN 04' WITH 87,000 MILES ON IT, THE OWNERS MANUAL STATES TO CHANGE THE TIMING BELT AT 90,000 MILES. Toyota wants $450.00 just for the parts (belt, idler pullys, water pump) and 6.5 hours of labor at $90.00 per hour!!!!!!!! Wow, I realize this is essential, but think the cost is outragious! Has anyone had there's changed, and at what milage and at what cost?. Did the engine perform better after the install. Interference motor will be wiped out if it breaks. Any other thoughts. After reviewing the tech procedures for this job, its way out of my league for DIY. Has anyone out there had this done, any other tips or experiences???