Used man, new gears under 150 bucks would make me a fool. I should have specified though. However, they are Ford Racing gears with under 3000 miles on them in very good shape. I just put 4.30 gears in my 4V.
Turns out my differential needed rebuilt, my Pinion seal is spewing oil and the installation kits aren't cheap so I just decided to splurge and go new everything and switch to 31 spline.