Are you referring to the “Official” Textron Longitude checklist that someone posted here a while back and then removed it? Someone went out and bought one and posted it here. Anyway, I grabbed it while it was still available and I have created my own MSFS-specific checklist using it as a reference. My checklist is still a work-in-progress, but I plan on putting vspeeds, etc on it, eventually.
This is a link to my checklist, if anyone is interested.