What is the New Custom ARP Press-In Wheel Stud and why the price change?

Prior to May 8, 2010 customers were required to "size" their hub and axle holes to fit the .625" knurl diamter of the standard ARP wheel stud.  Per ARP recommendations, a .005 - .010" diametrical press fit is desired.  The nominal hole size on vintage Mustang hubs and axles is .610" requiring the customer to carefully hone the holes open slightly to .615" - .620" diameter.  While this was cost effective, it was one of the more difficult parts of our installation.  We surveyed customers and they unanimously voted for the more expensive custom ARP stud to ease the installation process.  Each axle end (10 studs) of the new custom ARP studs costs us $26 more than the standard studs.  We have changed the price of our kits to reflect our cost difference only, and have even lowered the cost of some of our packages thanks to bulk purchasing efficiencies.  The new stud has a knurl diameter of .6175", designed to press right in to the vintage .610" diameter holes.  We have also shortened the length slightly to better match our vintage conversion kits.  Another advantage of the new custom stud is that we have specified the head diameter such that they now fit both recessed and non-recessed hubs as shown below.  In summary, we have made the installation significantly easier while maintaining the highest quality and strength ARP wheels studs.