Originally Posted by RSmark84

I assume you're a little confused, As I am reading your post.

You say you want to replace the front floor pans, but go onto mention the chassis stamp. The front floor pans are no way near the chassis stamp. Are you wanting to replace the rear floor pans? If so cut round the stamp assuming the inner sill to floor pan next to stamp and weld round it, ground the weld and will look good as new.