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did 6 cyl demons come with a cardboard material like interior?
If you're referring to the headliner, then YES
is there other typical issues with a demon looking at a used one for example typical rust issues etc
Take a business card type magnet with you to look at the car. If it has a vinyl roof, check it closely at the lower rear portion of the roof where it meets the window. Also down low on the rear quarter panels & the doglegs on the front fenders. Post some pics if you can, and the members here will help you further BEFORE the purchase....Good Luck :cheers: