I am not sure if this qualifies as a scratchbuild but a fair amount of work has gone into this.
Carrera DB3, yellow stripe polished off, cockpit rebuilt to clear the chassis which is an Amato with Slot it running gear and Pendle wheels.
The model is finished to depict the car entered in 1951 Dundrod Tourist Trophy driven by Lance Macklin. The car ultimately retired due to loss of oil from the magnesium - alloy sump.
Thanks for looking