So, I have acquired this. I know exactly what you are thinking, and yes it was possibly just more junk but here it is. A frame from an aluminium scaffold staging rated to 250kg, 20" wide, 61" ish hook to hook, not twisted or dinged, fairly lightweight and possibly, just possibly adaptable to chassis material. Rails are about 3" by 2".
Semi elliptical springs on the front would give me the wheelbase or there-about.
It's time to employ group think. Let your thoughts run freely please, no such thing as a bad idea, they are just starting points for improvement.
Question.
What would you do with it and where would it lead you in terms of inspiration car?