well here is my 1993 bonneville se
















and heres all of my rust problems, theres quite a bit

first the not so serious
both fender wells





now, we get to the serious part
passanger side engine cradle




passanger side under door


passanger rocker (have a new one, need to put it on)


rear passanger side sub-frame




heres the drivers side to compair it to



so whats everyone think, i know its prety bad but i have a welder and i have some skills while useing it.

I think you'd be better off taking off the radiator cap and slipping a new car underneath it!

That'* allot of cancer and it looks like there is more than cosmetic areas involved, i.e. structural components.

I don't think anyone in their right mind would advise you one way or the other on how to proceed. If you do decide to tackle this...the best of luck to you!

i knew that it was really bad and i figured someone might have done something like this

That'* a lot of rust. Going to take a lot of work.

I have a 1992 SE with a bit of cancer. I believe the engine cradle rusting through is an issue with Bonnevilles, the prior owner said he had that repaired, or replaced, or something on mine. My rockers have rust, but not so much that the panels fell off or won't attach. Mine is basically similar to yours in that the front and rear subframes have rust while the floors look ridiculously solid in comparison. But either way, the garage I took it to said there was no way in hell they'd pass it on an inspection due to the rust, so keep that in mind, although that didn't stop the shop the prior owner took it to from passing it with flying colors. I once had a vehicle pass inspection and not 10 months later did the rear frame all but collapse. Sooooo there'* no telling, especially with a unibody, unless you're an expert But it seems like most shops are either paranoid because of the consequences involved so they error a little too much on the safe side, or they just want your money.

Those holes in your subframe are a legitimate cause for concern, I can tell you that much. I'm not sure of the structural significance of rockers in general, but a hack job won't fool anyone into inspecting it that otherwise wouldn't, unless you're just doing it to reattach the panel.

oh, and mine has rust on the quarter panel but only because I scraped against the snowbank around my driveway too many times LOL.

anyone have any ideas about how to procced on this one? lol

my plan was to get some tube that i could put up into the rear subframe and weld it in place where it would be solid then i dont know where i would attach it to but i would figure it out when it gets warmer out

I guess as a starting point you need to seal that rust. You can do that with something like navel jelly, or some other product that will convert rust and then seal it.