Since site owners are a community amongst ourselves I thought I would share one of the Xenforo options that we us a lot on our site, Skitalk.com and that is the Prefix feature. This could be used in the drivetrain area where there are multiple engine options ie 5.3L. 6.2L ect. With the prefix you could search by clicking on just that particular one and it makes the search process a lot better. This works well in the "For Sale" area too. For Sale, Pending, Free, PSA, and of course Sold. Just a suggestion from one forum owner to another. This might be a little more work for the Mods/Admins to go back and edit old posts though but you might be able to recruit some established members to help. Prefixes... After clicking on "Colorado" and it makes what you are looking for a lot simpler.