If you are looking for exact replacements they are usually hard to find. Here is a
LINK to the company I used for replacements for my Cougar. Somewhat pricey but good quality. They also sell the glue remover (Rapid Remover) you will need after removing the graphics.
I removed ten-year old graphics using a hairdryer on low heat with a plastic scraper. I found a heat gun was too hot. After I got a section started, I would gently remove the graphic with one hand as I applied heat just ahead of where the graphic was releasing. But where they were more brittle they would come off in bits.
I then polished the whole camper with Meguiar's 105 compound to remove the oxidation. This was on fiberglass gelcoat. You will be left with ghost images where the old graphics were so if you put the same ones back on you will easily tell where they go.
I will tell you it is quite a bit of hard work but the results were very satisfying.

Click For Full-Size Image.