New floor pan/bulk head

Hello All,

I'm going to asked about drilling the holes for the rivets in the New floor pan/bulk head, so the already bulk head has the holes drill out and I'm guessing that this was the original bulk head panel because of the one set of holes for the rivets in the frame and I tried to match up the holes to my New bulk head panel and of course they don't match up, so my question is

How do you match the holes to the New panel to the old frame rivet holes?.

Spent a lot of time getting this panel just right and would want to jack this up or just drill a bunch of new holes in the frame.

Thank you for all your input

Ben

New floor pan/bulk head