Heh - someone should do a souped-up Scorpion along those lines: great big supercharger scoop sticking up through the engine deck....
Apparently the Scorpion holds the land speed record for tracked vehicles in real life :)
Exactly, but the vehicle in question is still in full military trim because the company that did the speed record are in the business of selling Scorpion upgrades. Can you imagine how quick it would be if you could strip it down and tune it up to a pure "dragster" as per the Moon Sherman?
I've been looking at the AFV Club Scorpion: it's perfect for this because the engine cover is separate and all the military fittings you'd want to lose are separate. It doesn't have an engine, but I'd imagine you could scaleorama a suitable 1/24th car engine.
Exactly what you'd do to it would depend on what rules you invented for it to meet. Mark Neville didn't go into detail in his Moon Sherman, but from what I can see:
Remove all hatches, periscopes and external stowage boxes.
Remove the night sight (box next to gun barrel) and plate over the hole (you can see this on some real Scorpions, particularly prototypes).
Fit a small screen in front of the driver's station.
Fit the upgradeed engine with no hatches and it's supercharger scoop protruding above the deck level.
Remove the exhaust and replace with a small, oversized stub (chromed, of course... )