I found a '94 Polo Green SVX with 370,000 miles. It is AWD, has a beige leather interior, etc. Currently the radiator has a crack in the top of it (the plastic portion) and may need to be replaced. The seller is asking $750. The tranny shifts smoothly and the engine has no oil leaks (which is remarkable). The owner said there is a "thud" noise from the rear whenever he turns. I have no idea what that is. Do you think this is a good deal?