Hi efferman,
a part I'd really want to see was a McPherson wheel hub.
Basically a 42000 front wheel hub, but instead of the upper pivot hole there shoud be the opportunity to attach a spring.
Something like a combination of and or at least an anchor point for the spring.
To get proper kingpin inclination, the spring should be set up with some angle.
If you're bored, maybe have a try. This would be a fine part.