Anyone have any ideas on how to take care of it the right way without bondo? it is eaten through and i am wondering how much and if it would be possible to replace them?

 

Your post didnt have enough information for me to give you a completely accurate run down, however I'll do my best.

Rust is a terrible enemy that must be vanquished BEFORE it eats through. There is several versions of rust I've battled

Surface: The rust that appears brown and usually in rock chips, paint missing and scratches. This is removable with a good sandblasting, body pastes and then repainted, simple.

Then you have the nasty rust: The type that flakes off, leaving holes or turns the metal brittle. Basicly, its become like a fungus. Its eating off the metal of the car. Its a chemical process :P But I like the fungus explanation better.

You can save your car with putting a stop rust agent on it, like por 15. The best way to is to replace the quarters, which are available after market for pretty cheap if you look at the right places. IF however the rust is eaten the INNER wells, your boned. On the wheel wells, there are two layers on the quarters. The outside, whcih is replaceable, and the inner well. They look like one, but they are two seperate peices. IF the inside is being eaten, you can only patch it quickly and stop rust it. You CAN in theory repair it.. but its both hard and expensive.

Feel free to correct me, as Im by NO means a body man.