Jeff and List - The signed original engineering drawings, material specifications, and all associated quality control paperwork are safely in my personal files. The vendor has the documents as well, and could produce another batch if requested. The batch would probably have to be a minimum of 100 pieces for him to consider it, and he would require a prepayment for the entire production run. His costs include the material, setup, manufacturing time and equipment, and costs associated with having two separate certified inspection laboratories inspect and certify both the material and the configuration of the final product. Bottomline - This is more involved than making a phone call and making some metal chips. I trust that you all understand that. As far as the actual material used in the TOBY-TAB's, I selected a nickle-based superalloy called Inconel 718 because it is one of the strongest, stiffest, and most corrosion resistant materials around. There is none better that is available to mere humans. I believe that there is a long series of articles in the tech files section entitled "Trailing Arm Bolt Engineering" or something similar for those who are brave enough to dive into them again. For those of you who have a set of these bolts - congratulations. For those who didn't want to buy a set for whatever reason - good luck. Toby Peterson VIN 2248 Winged1 --- In dmcnews@xxxxxxxxxxxxxxx, "gr8old1 <Gr8old1@xxxx>" <Gr8old1@xxxx> wrote: > Hopefully, the design drawings and specifications are well > documented, archived, and such. For those of us, like myself, who > have yet to get their hands on a Delorean, it would be nice to know > that we could have the option of being able to remake these crucial > pieces when we finally have something to put them on! even if it's a > high cost to ourselves, safety is a must. > > BTW, i searched the archives, but can't find the posting about the > material that was used. What was it?