Hi, I’m considering buying a 300zx, the car looks good in pictures however the owner sent me some pictures of the underneath and something on the frame rail didn’t look right. Please see attached pictures, it’s a one owner car and as I said looks pretty good otherwise. Had 120,000 miles ish. I can’t even tell where this would be on the car as I am not familiar enough with these cars……yet. It’s a long drive to see and pickup. Please help.