That is definitely lean for sure. It could be an intake gasket but I'd hope not. It is really tough to use carb cleaner or anything and find a leak on newer cars. You pretty much need to have access to a smoke machine used for testing EVAP leaks and what not.
This is a complete Canon Rebel XS kit with the 18-55 lens. It has just over 800 shots on it and is like new other than a scratch on the lcd. Everything is included, and the warranty card and upc are here so you can get the full warranty. More info :
Amazon.com: Canon Rebel XS 10.1MP Digital SLR...
But he needs the correct idler anyways, for the cost he might as well get the correct setup with the right idler/belt/etc and sell this stuff and get some of the $$ back. Technically yes he could make it work.
I bet it will, a good auto is nice. That was a possible idea if the T-5 (or WHEN) craps out in mine. I am just discouraged with mine right now. Long story, don't want to get off topic on your thread I will update mine or PM you.