I will ask the guy who has all the stock mentioned above, (and whole lot more besides, original threaded axles, wheels, insets, tyres.), if I can PM his email address to anyone interested in contacting him.
The 3d chassis mention is by JS and they worked very closely with members of our Club to develop chassis to suit these cars, (plus many others)
I used them to update the Scalextric Formula Junior range , (the same chassis fits all the Super shells single seaters, and they customised one for me to fit the Supershells Porsche 906.
Not sure if it is allowed or not on this site but I can paste a link to the JS Facebook site where you can see these completed cars.
Regards
Alan
PS for your information we can build these cars for ourselves with JS Chassis and all new parts from a main dealer comprising 25K FF motor, Slot.it gears/axles, Scaleauto guide with NSR racing braid for around the £40 UKP or we can build with JS plus original parts for around the £25/30 UKP.