Hi ya bri, just to add to this, its a great conversion for sure, and a big confidence boost when tackling coping, I paid £9 for the gringking ones, and they got fitted to stage 5 indys, to be honest they are a bit of a sod to do, you've got no chance of using the sleeved nut that comes with the gk kpins, so have to use standard nuts, and also they are a little short really , I just about fitted em , and did work out ok in the end, ,incidentally mine were fitted with hardcore hards
But what are better kingpins are the gullwing pro bolts, they are a little bit longer and the base nut will fit a indy base easier , plus only £6.50 posted on ebay, dont think I can mention the seller, but just search em, or see if woody got any first
