k3fallout

Hello all. I have a '91 S13. The rust on my car has been causing a lot of concern for me. I don't really know where it is, maybe a sort of radiator core support or bumper support. I would just like opinions on how bad it is, how much it may potentially cost, or even if it's worth keeping my car. I am the 3rd owner and this car only has 58k miles, which is the only reason why I want to keep it because it drives great. I'm gonna upload a series of photos here. Sorry if they may be too big.