Rust in trunk

[AnthonyStallone]

I found this AE86 hatchback with a good motor and mint interior, the only problem is the rust. There's a large patch of rust on the left rear wheel arch, which isn't too much of the problem, the real problem in the rust in the trunk. I'm not sure what the technical term for it but the metal part in the trunk where the spare tire goes. That panel is rusted around the right side severely, and it one place even has a hole. The guy is offering me a good price for it, and I was just wondering how much it would cost me to order that panel online, have the other rusted pieces cut out and the new panel welded in. I'm willing to pay up to $1500 canadian for it. Also if you guys could tell me the technical term for that piece that would be wonderful so I could look online for it. Also if you have any good websites where I can find that part, that would be wonderful.

Thanks