What could be better than 3?

You guessed it 4! The Chassis that Dad built and was purchased by the 26a racer, Lance, has returned to the workshop. Lance has decided to not continue with his racing hobby and would prefer to spend the summer months out fishing. Dad has purchased the chassis back along with a mountain of spares, pretty much everything required to complete the car. There are already some people interested in either taking an existing car or this brand new chassis off Dad's hands.

But of course we just have to wait and see. If it hasn't gone by the time its complete the biggest hassle will be which number? 43 or 83?