1994 Audi S4?

Porsche looks neat but I really want the AWD so I can drive in winter. How much are we talking about for the restoration? 2k? 4k? 10k?

Depends on the quality of the job and severity of the rust I guess, but honestly, welding galvanized metal isn't something I'd wanna tackle in my own garage.
That means you'd have to outsource it to a professional shop, and if you wanted the whole thing galvanized again you'd have to completely strip down the body, remove all of the paint, pay a company to dip it, get it repainted...
You get the idea. Surface rust would probably be manageable, but I fear it's more than just surface rust from the way he worded it.

The S4 would be cheaper for sure. That's not to say a Coupe Quattro doesn't have its upsides compared to an S4, it's physically lighter and smaller, much closer to the actual Group B rally cars.

Jesus, sounds like a +10k project. Is there such a thing as "frame fatigue"? Like even if you maintain your car, will the frame just start to give up? Many thanks by the way, I think I'll pass out on it but...it's just 500$...for the whole car with a 2.2 i5! Such a bargain

Haven't really heard of frame fatigue on modern unibody cars, they're plenty stiff. If anything in the frame breaks it's usually a subframe mounting point or shock tower, since those are areas where you get a lot of concentrated force.
And yeah, you'd probably pay more for that engine alone if you were to buy it separately, but then you'd need a shell to put it into when the old one goes, or you'd need to have enough space to store a car (or all the parts that are still good).

Ok cool thank you very much mate, I'll reconsider this. What I though I'd do is ship the car to my place (Halifax to Quebec), store it in some garage and then periodically work on it or pay people to do it for me. What's the best website for 1991 Audi Quattro parts?

Also are Quattro parts more expensive than UrS4 ones?

They're probably not very common either, but the Coupe shares a lot with the B3 and B4 80/90. Don't know the best place to get parts for them in Canada since I'm in Europe myself, although 034motorsport is a great source of speed parts.

Ok got another response of the guy

>VIN is WAUGE08B0MA003919. There are areas on the painted body with severe perforating rust. There is a lot of rust repair to do. That's why the price is so low.

He adds

>Frame rust too. Underside is quit rusty. Fuel lines have rusted through in the past

Sounds like you'd need a lot of dedication to get it back to good condition, or just buy it for the engine and drop it into a clean shell eventually.