Thanks to all the reviewers above for the really helpful information. I received these and made them today for my 2006 Sienna LE. Some of the lessons I've learned that others might find useful: 1. It's definitely not necessary to remove tires. Got advice from another reviewer ie no need to remove tire. There is enough space to work under the minivan. In fact, nothing interferes with the work.2. Do a dry run with all your wrenches before you take things off. This will ensure you have the right tools before removing the screws so you don't have to repack everything and run to the shops to buy the right ones. :-) The hardest part is loosening the screws at the bottom, I'd probably use an impact wrench if I knew how hard it is. All of the penetrating oil I've applied over the past three days hasn't gone anywhere based on what I see after finally unscrewing the bolts. The original plastic boots and nuts are recyclable, I didn't use any small parts from the packaging other than the shock itself. All this took me about an hour and a half. The handling is significantly better, the original on the driver's side is completely shot. The quotes I've received for installation are mostly around $500, not bad that it can all be done in parts for $100 + 90 minutes time. The downside is that I have to replace the front struts.