How many miles does it take to braise a fish fillet? Should you use your exhaust manifold or your valve cover for a pork tenderloin? Were Jaguars really designed with veal scallopini in mind?         In the new revised and expanded Manifold Destiny, Chris Maynard and Bill Scheller, two experienced rally drivers--and cooks--answer these and any other questions you've got about cooking under the hood. After all, why drive to a diner when you can turn your Chevy into one, especially when you can make a better meal right on top of your engine? With a little bit of ingenuity--and a whole lot of aluminum foil--you can whip up dishes like Cutlass Cod Supreme, Cruise-Control Pork Tenderloin, Nifty NAFTA Nachos, Donner Pass Red Flannel Hash, and Fupped Duck Catera.         Witty, preposterous, and great highway fun, the more than forty recipes in this cult classic are road-tested and taste-bud-approved. It's a must for anyone hitting the road with an empty stomach and a full tank of gas.