It depends on how bad the rust is. I wouldn't put time and money into a car with lots of rust it is a loseing battle. You should be able to find a running 617 for $500 or so I see them in the local paper in my area once in awhile.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200