To my knowledge, the wiki has no search or filter functionality that will let you view only, say, Iksar Monk chest pieces with AC greater than or equal to 40. You can get pretty close with certain categories, however. These are the links found in the box at the bottom of an article. For instance, visit the
Category
iercing skill items page to see all documented piercing weapons, look for the column marked "Ratio," and click the little black arrow next to it to arrange the entire category of piercing weapons from lowest to highest ratio (or vice versa). Of course, you'll still need to do a bit of scrolling back and forth to make sure the item that piques your interest is indeed usable by the class you're considering.
The server could probably get a fair bit of mileage out of a restrictive item search along the lines of
the one at Allakhazam, at least when it comes to race/class/slot and min/max stat combinations. Most of the other parameters would be redundant because things like worn effects or the zone an item drops in are categorized in a pretty useful way already on the wiki.
(Believe it or not, the absolute best web-based item search I have ever found for Live items is hosted by MQEmulator, but posting the link would probably be in bad taste. :tinfoil: I used to refer to it when puttering around on GM-Command servers on EQEmu, as the in-game item search is pretty useless unless you know specifically what you're after!)
If, by some weird chance, you're looking specifically for the optimal set of buyable AC gear for tanks, you might find
this thread handy.