Hi I have an indian sunn which weighs about 3 ton. I have just got another sunn Mustang which is probably about 4 kilos. head is not the typical strat head. states Sunn Mustang. an authorised fender product. And on back of head the numbers 28-1100-906. has an allen key instead of bullet for truss rod. Any ideas where it is from and when ?? Tks Skuzzer
