Cd value for Midas coupees?

[Hans Efde]

Hello,
Does anyone know what the Cd value is for the Midas coupees? That's the aerodynamic drag coefficient. It will be somewhere between 0,3 and 0,36. I know Murray put it in a windtunnel for development of the undertrays. I suppose there should be some data on that test, but I have never seen it. Anyone knows more?
I stumbled in a book on aerodynamics on a formula that can be used to calculate the needed power for a determined max velocity. It got me thinking!
Cheers, Hans