Im looking at buying a coupe deville that was origionally a vinyl top car. Im planning on repainting it if I buy it, but the roof has some DEEEEEP surface rust My question is, is it cost effective to replace the vinyl top, or should I bite the bullet and muriatic acid and prime the roof? I sure hate messin with that acid Iv never priced a vinyl top before so I have no idea what they cost. $250? $500? $1500?