I don't think anyone on this board does. You should consider sourcing nice clean used straps and having them zinc plated. On a GM A-body resto a while back I tried to install repros from either Year One or The Parts Place (Can't remember which and we ordered all the parts for this car from those two vendors). The repro straps did not appear to be plated at all and were also made of thinner steel. As a final blow----they were too short to use with the factory bolts that hold the straps in their forward location (by the differential). Again, find some nice used ones and go with those if possible. Some vendors have them in stainless steel also.
