86 GMC C3500

Hello all, having trouble finding the rear amber side markers for my 86 dually. Does anyone know where I could find them?
Sites already checked would include: rockauto, partstrain, LKQ, LMC truck...

If they are the dually ones use older model front fender lights

They're not the same shape are they?

I found some, not sure how many they have, but if anyone else is looking for them, these guys have them on the website.

Also, LMC said the ones they used to offer have been discontinued.

They are the same I just changed mine out recently