Steve,
I doubt you will want the supersize shell for that car as they are 280mm and 300mm wheelbase shells which will probably be way to big for your car.
Your car will be around 255 - 260mm wheelbase which is now the standard size for pretty much all 1/10th cars.
Check
www.hpieurope.com and you can see what shells will fit your car, you have plenty of choice !!
Regards.........Mark