ecrane

not sure if the cheapest but I've used these folks... http://www.irontoad.com/

Fred, You'll get plenty of opinions (like something else, everybody has one). My opinion is that to replace the idler and water pump is an ABSOLUTE waste of money. To even replace the timing belt at 90k is a waste of money. All of those parts will likely go TWICE that far without any failure because they are some of the highest quality parts I have ever seen. I would be interested to know how many have had any of those parts fail even if they have gone twice the recommended miles. I'll bet extremely few. That's only one mans opinion (but one man who has spent his life in automotive). It's your money, spend it any way you wish. Good Luck! yes, you will get different opinons. My wife has a 2001 RX300 and I had the timing belt replaced @ 95K. I allowed the shop to do the water pump and idler as it didn't add a whole more lot to the total bill which was about $6-700 at a private shop. The theory, as you likely know, is your there anyway so why not replace them? Was it money well spent? Beats me, you would kick yourself if one or the other fails relatively soon and you're paying that labor again. I don't spend a lot of time here, primarily when something is wrong and I want to research it, but you don't seem to read alot about failed water pumps.