i’m considering buying a 1987 softop rx-7 non turbo. its got 104k miles and manual transmission one owner and great condition with only a few minor cosmetic fixes. the only thing im concerned about is the cold start as it idled kinda rough but ive heard thats normal. the mechanic shop selling it on behalf of the owner is asking $5200 for it. im reaching out to ask if this is a decent price (maybe even investment.?) and for any advice on upkeep and what im getting myself into