Check out 4Crawler.com--they'll give you all the info you need to make an informed decision, and they have excellent kits. With a 1", you won't have to change much (if anything)--it's small enough that most stuff will extend to cover the distance without compromising function. None of them are too difficult to install, though--I did a 3" on a 2nd Gen, with various extensions and such, and was finished in a couple hours with one helper.