So I am going to finally install ARP studs on the rear of the 55. I see a set of 2.5" studs (10 of them) are $69.00 from several places like LMR and CJ Pony Parts. The thing I don't get is several places also sell a set of five 3" studs for $16.79 per set. So $69.00 for a set of 2.5" studs or $33.90 for 3" studs. What am I missing? Why are the 2.5" twice as much as the 3"?


JJ