My race car in 2003-2004. It was a TAMIYA TRF 414 chassis which I progressively modified. Of course any modification I made I am pretty sure only made the car worse but it was fun to experiment with different configurations. They were fun years, when I had plenty more time and a lot bigger budget.
I remember when I first raced the box stock TRF 414 WCR edition, the replica of Surikarn's 2002 World Championship winning car, I started winning straight away after a miserable time with my previous car, the Yokomo MR4-TC SP.
The MR4-TC SP was a very nice kit, but required quite a bit of knowledge to make it work properly and quality was nowhere near the TAMIYA car.
I couldn't find a picture of the TRF 414's original form. Here is the car with the 'SSG' chassis, a white/silver colored carbon fiber which was a bit more flexible than stock.
In this, last edition before I sold it, I had installed a prototype carbon fibre chassis custom made by Fibre-Lyte.co.uk in UK just for me. If I remember well the purpose was to add a bit more space in order to accomodate the 9.0V battery for the cooling fan. Although it looks ugly, it did work.