Is there a site where you can get reference pages and checklists for downloaded aircraft because not all downloads come with these pages.
(That sentence did not sound right but who cares????)
Your asking for checklists but you aren't specifying what aircraft, they are scattered over the net.
Get them straight from avsim. You can ZipDive, download them idividually or in a pack. Plus you can switch between different View Modes.