Here is a picture of my original floor 70 Cuda that is orange and my original trunk floor for my 70 Challenger which is blue. Challenger one is more towards the shock tower on that little raised area for the gas filler neck to go thru the hole. Cuda hole for filler neck is in the back on a similar looking raised flat area for the filler neck to slide thru. Both us same rubber grommet/seal.

Mopar to you!