I would like to have a set from my table too as fine art work! but mine are hidden under the car

You can reuse all the metal gaskets from the factory install without problem. I would hit the bolts with a bit of penetrating oil to help before removal of the stockers tho. Also a bit of anti seize on the O2 sensors is a good Idea for future removal if needed. I also put in new #1 O2's as mine had 50K miles and it was 200.00 more (100 each) from the dealer.
Now I wish I could get a 3rd cat delete bolt in sized in the same as the 2.5 to match. or is it not worth it?