I always liked the RX8 rotor shaped seat insert, so i found 1, the only one i could find on ebay from the USA for $80.00.
I needed 8 so i covered it in black silicon to make a mold and then started making the 8 rotors out of fiberglass.
Then i used some thin cardboard to make a rotor shaped tube to connect the two rotors and fiberglass it.
And made a silicon mold of it so i could make 4.
Gave them a few coats of undercoat and test fitted them and here's how they look, just have to add some fabric in between the rotors.
Still have to paint them silver. and when i put some racing seats in i will change the plastic racing harness inserts with the rotors.