Hello, I'm looking for a rear brake plate for a 76-77 Suzuki RM250, RM370. I have an aluminum one but I'm looking for the "racer's spare" magnesium part which is identical to the stock aluminum part only it has "magnesium" embossed on the plate. If anyone has one in their stash let me know what you'd have to get for it. To that end I'd also like to get my hands on one for the front wheel as well. The front is compatible with the 76-78 RM250A-C2, 76-77 RM370, 78 RM400 and the 75-80 RM125. Thanks much, Mike.