Wow those wheels on that red 7 look sweet! I wish my fc was a s4... sometimes. I hate the auto seatbelts in the s5, many spilt drinks & choke holds haha. I wish I had stripped my s4 interior completely after it's demise.. might end up getting a racing harness anyways. Although the s5 has stronger plastics than the s4. I went through a couple brittle center consoles in the s4 & I have extra s5 center pieces if you're needing some. Actually I have enough parts to put a few fc's together so if you need anything let me know.
Love the duck wing had one on my s4
Good luck with your build!