Time for some updates!
1. Brakes
Using the detail up parts, I built the brake discs (whilst making these, I cut myself with the knife. I learnt thus that it really sucks not having a thumb when modelling. Good thing it was on my left hand
The calipers are painted gold. In the real car it has a red Brembo logo on it, but unfortunately I don't have the decals for them, so leaving them blank
The tires are finished (for now... I may decide to do something with the tires to make them racing slick tires... open to any suggestions)
2. Body Modifications
Building the wide-body modification: GTC car has wider body than the Challenge (the kit). So widen the body by 1mm on either side:
Next, the front air intake. The GTC intake is bigger than the Challenge.
Applying the putty (which I learned that I should not have used the basic putty, but use the epoxy putty or polyester):
The body will be primed and will be sanded as necessary
3. Chassis
In the GTC, the front has a overhanging lip that is absent in the Challenge. The rear diffuser is gone in GTC (See picture below). So recreate these by replacing the front and rear with the new pieces:
That's it for now! Stay tuned for more updates later~