Create custom Values for for each Stat (Pawn Scales) and this Addon will do the math and place a Pawn Gear Score on Item Tooltips. This allows you to quickly evaluate upgrades and get a second opinion if you are undecided. You can also have multiple Scales for Off Specs to make it easy to slowly pick up side Gear.
Download links for the required Text can be found: Here
Will this one work in the new classic?
no, it does not seem to be working.
this version of pawn was written for wow version 2.4.3, and does not seem to work on 1.13.2, which is what classic wow is.