H&r sells double ended studs.the nice part is they have an allen key on the part sticking out towards the wheel so you just have to buy 12mm x 1.5 male,put red loctite and a 12mm x 1.5 female on the other end.there 8.50 a piece.dont know bout using spacers with those ,Moroso doesnt recommend using spacers with its stud conversions.i agree with most people in saying that spacers and adapters are just compensations for having the wrong wheels.if all you want is convert,i did also the stocks are a pain to mount,mount and spin,lol.i tapped to 14mm x 1.5 to fix stripped threads from overtightning at tire shops and now am converting the studs and dont want any spacers to be honest.just bought a 18" x 9.5" for the rear with 35 series tires and am working out a 3" drop.want 18" x 8" with a 30 series in front with 3.5" drop.