original spark arrestor exhaust tip: 86 C20

[I1502]

Is there any original "spark arrestor" grilled exhaust tips out there anywhere? NOS?
My '86 C20 (30,000 miles) still has one, but its nearly rusted out. I'd like to replace it if possible.
Is anyone familiar with this? The exhaust end was oval and had a perforated metal plate recessed across the end. I imagine most got replaced years ago.
thanks! If I were a little computer savvy, I'd post a picture!