Thanks for the nice comments. I like the look it has. I want to change out the suspension as it has a rough ride with the coils so I want to go to spindles and would like to get the Impala SS wheel well moldings. I like the power but would like to up it just a bit. Change of wheels and the kit to center the rear wheels.
Welcome and nice score. Car looks really nice and I have always liked that color. As was mentioned, GM did have a CapriceSS it sent overseas but back in the day you could buy a lot of the CapriceSS items right at your local Dealer.
My car started out like yours and has some of the same emblems or ones I modified like the Caprice SS logo on the trunk from the Caprice ClaSSic emblem that used to be there. The script doesn't match the Impala/Caprice SS Scripting that GM used, but oh well, there is nothing else on the back of the car other than the Bowtie on the trunk lock.
...and the Quarter Scripts on the Rear Panels...
My car was very similar to yours back when I started my Conversion. The Chrome Wheel Well Molding, Door Handles, Body Belt Trim, etc. have all been removed or replaced. I wanted it to look like an Impala, but didn't clone it to one and kept the Caprice Theme on the car. I prefer a car that is a little different from the crowd. Here is how it looks now after most of the body mods using Impala parts.
Mine was pretty easy since the car was Black to begin with and this was one of 3 Impala Colors offered. If you are looking to do something similar with the Wheel Well Moldings that you were talking about, you may have a hard time finding them color matched already. You may need to talk to a painter and see if they can paint them to match your existing paint. They may even be able to scuff up your old moldings and Paint to match.
EDIT - Actually looking at those pics a little closer, that color seems to be very close to the Dark Cherry Metalic (DCM) on the Impalas. You may be able to find moldings, door handles, etc to match.
Good luck with your mods and keep us posted on how you car ends up. Sometimes the fun part of owning the car is doing the mods. Dont worry, you wont run out of stuff to do, I haven't yet.