Don't restore it.
I think it's more desireable as is and shows good character.
Everyone is rattle canning these and de-valueing them I feel.
Too many with replaced glass,vinyl graphics and shiney over restored paint & chrome.Only to sit somewhere as a paperweight.
I'll pass up 10 restored ones to find one that isn't,and pay more for it.
They're only original once..

Collecting Vintage Sunoco