Hey there,
I have a 66 delta 88 4 door with a rusted floor pan on the drivers side. I have yet to find a replacment, but have been told that a cutlass pan will work??? The pan will be replaced from under the seat to the toe board. Any comments would help. Thanks Jason

 

Have you checked Kanter or Fusick on the internet?

http://www.fusick.com/

http://www.kanter.com/

 

The 88 is a B-body, which is longer and wider than the A-body Cutlass. You can make anything work, but it will require quite a bit of work. A better choice would be Impala/Caprice floor pans. All 65-70 B-body cars should be the same.