I tried 3 bolt dealers in Detroit and none showed any in their books that were longer than 80mm
J69GORDON on this board has ordered another box of 25 and he's graciously offered to take care of distributing them to us....you should contact him right away because I don't know how many are spoken for
I sent him a PM last Thurseday and haven't heard back from him about what he is doing. I have purchased the MM IRS bushing kit and Steeda bushing kit and was planning on replacing them this weekend if I can find somewhere to get these bolts. Otherwise I will just replace them then have to go back and replace the bolt. I am going to be changing my rear tires to Nitto 315 DR on the stock rim next week and if I don't need the bolt for them to fit then I will purchase it when I can and replace it later.
According to J69Gordon they are 12mm x 100mm button heads. The stock bolts are Grade 8, but he found some that are Grade 12.2. I just received a PM from him and he is planning on doing another purchase.