The pieces from this alternate is from 5763 (Dune Buggy). When I took this apart and i begun to find some pieces to start with, those 1x4 curve/slope really looked as the front of a F1 Racingcar. It would have been a bit better if the wheels would have been smaller, but I may only use the pieces from the actual set. Hope you'll like and please leave a comment.
You are right that the 1x4 curved pieces make a great nose for an F1 car as both Dave and I have shown before. However we used a different set for it. With 5763 it seems to be a lot more challenging, and the off-road tires do not help either. Still you managed to come up with a model that has the spirit of an F1 car. Good job!