If he knows there is nothing wrong with the car he will gladly let you check it over with a fine tooth comb.......... I would check everything you want..... Sill plate screws can be rusty and hard to get out ..... but not impossible...
Yeah thats what I kind of figure....ditto on the rusty screws...been there....
I was thinking I could just get under the car and look at the floors from underneath but if its undercaoted etc that will be a problem....that stuff makes it hard to see rust and such I would think.