z32 300zx possible frame damage? Need your opinion please

[Trutrax]

So I'm checking out a 300 and took some pics. This image is of the rear passenger side, just beside the spare tire undercarriage. My question is, it looks like its been hit from the rear and buckled. Is this the case? if so, how hard of an impact would it have to be to cause this? and if hard, does it call into question the structural integrity of the rest of the car?

Also, the frame rail has rusted through and needs to be replaced on the driver side. Where else should I be looking at for serious rust issues?

Thank you to anyone who takes the time to help me out.

http://img375.imageshack.us/img375/9696/img0039zm.jpg (http://img375.imageshack.us/i/img0039zm.jpg/)

http://img706.imageshack.us/img706/4554/img0047gwg.jpg (http://img706.imageshack.us/i/img0047gwg.jpg/)

[Future_gohan]

that rust is nothing, everything else looks good, the frame might be tweeked, but frame shops are cheap or if it doesn't pull or shake its fine either way, it doesn't look bad.

Look under the break booster water normally gets down in there, same as the battery tray area.

[Z32TT-R]

lmao mine has the same exact bend but on the driver side in the same spot oppoiste too, i noticed it however after i bought the car. There is nothing structurally wrong with mine though its fine. Ill have to post a pic of it.

[Z32TT-R]

http://i39.photobucket.com/albums/e162/twitch184/random/DSCF1846.jpg

[Trutrax]

Lol, that's funny. Alright, it's good to know it sounds like it isn't a big deal. Had me worried. Just got to make sure there aren't any more surprises then.

[Z32TT-R]

Yea its no big deal.