Welcome to Stovebolt!

Your 1954 "project" looks like it's already had a bunch of TLC before becoming yours.
Thanks for posting the picture. You can find some help in this "
Where do I go from here" post to help you learn the ins and outs of Stovebolt as it will help you a bunch in knowing where to post questions "about splash panels" like you mentioned.
Suggest you post a new question on your "about splash panels" request in our
Paint and Body Shop forum as that's where you will get the best on-topic replies and help.
On using the
Search the Site Tool, if you don't find an answer or a related topic, change up the wording of your search (like "Inner fender splash panels").
Here is a resulting link to an old post on
Inner fender splash panels that has some great info.
Looking forward to seeing more pics of your truck and questions in the
Shop Area forums as you need help learning about your "new to you" truck!

Dan