It’s hard to see what you really have there. At first glance, I thought the original owner may have covered the inside of the hull with wood strips, but I don’t think the photo shows enough strips. If you have a rub-rail, you would have strips to cover the screw-heads. The photo is cut-off at the top so I can’t see if you have screws there. Pearson also put some teak strips along the outside of the v-berth where the tabbing ends. You’ll have to take a close look at the length of what you have and see where it might fit.
Rich