I'm looking for a source for Triumph Spitfire, early Formula Ford, longer wheel studs (total minimum of 2" in length) in either 3/8th/24 or 7/16th/20. An option is I can convert to a Land Rover Freelander stud as many Spitfire owners have done but I prefer to minimize lug nut standard/metric thread confusion that will ultimately come when in a hurry. ;-) TYIA