[bill dedman]

As regards the Roots-blown Mustangs at altitude....

Do they run better in thin air compared to how they run in good air, since they're not allowed to change blower drive pulley ratios?

I'm thinking they may well lose just as much percentage-wise, as a normally aspirated car would, when compared with their sea-level performance numbers.

The blown cars in modified classes have the advantage over normally-aspirated cars at altitude because they can alter supercharger drive ratios, and stuff more air into the engine to make up for the thin air, but these Stocker/blower cars can't do that. A turbo car would be interesting, in that situation, for sure...

Food for thought...