>>28542101 this, i did this on my cavalier and it was just a shitty cavalier, and know a guy who did the same thing to the same car that was even rustier with more miles than mine. at least if OP fixed this it'd he'd be fixing an AWD 1zz. you might be suprised at how intact the unibody might be under that frame. at the time i removed it looked a bit better than this https://www.youtube.com/watch?v=5YlmUjwYzA4. chances are anything you find in the junkyard will be just as bad, likely the reason the car was junked so you'd probably have to buy one online like i did from a junkyard in a non hellhole like arizona that doesn't salt their roads. when it showed up, there was not a spec of rust and i installed that part and replaced all the other worn suspension parts over the span of a few days, and it drove like a brand new car afterward. if i remember right none of the bolts even stripped or snapped somehow, sub frame bolts are pretty damn hard. but, one never quite threaded in right so i just smeared the shit out of it with lock tight and hoped for the best. to be fair though, this part was half the price of what you're looking at right now, and if that's the back, who knows what the front sub frame looks like on that thing. i'd say it's fixable where it stands but with that level of rust you're probably gonna run into something unfixable in the future unless own a welder or plan on buying one. if you're thinking about junking it i would atleast try removing it, if you manage to get the part off you can probably fix it, but if the situation is too fucked and you snap too many bolts you can always call the junkyard to come pick it up afterward.