Originally Posted by SRBMOJO

Here are some pics of my recently finished Toro Rosso F104 Pro with F103 TRG rubber tires (medium compound)

I made some new spindles to fit in the stock steering arm. The spindle is 1/4" longer than the stock one and I slid a 1/4" spacer (8mm OD) on the spindle. The spindle has a threaded hole in the end for a 3mm screw to hold the wheel on (like the Associated B4)

The rear rubber tires are a direct fit, I used the "O" axle spacer in the rear, and used the thinnest washer under the front steering arm, putting the medium and thick spacers on top. The car has 4mm ground clearance with a clear protective sheet on the CF chassis.

Rear width is 8" or 203mm
front width is 7.6" or 193mm