Oldsmobile built some of the most potent Muscle Cars of the era, and today they are among the most desirable.    This week, we're featuring a 1970 Oldsmobile 442 Convertible, and it is loaded with all the right stuff, including the 370 HP W-30 455 V8, the close ratio Muncie 4-Speed transmission, and the super-rare W27 aluminum center rear axle assembly.    Word on the street is that there are only a couple W-30 4-speed convertibles ever built with the W27 out of the 96 drop-tops made.     The story of this car is just as unique, as the history is known back to the day the original order was placed for the car at Hansel Olds in Fullerton, California by Robert "Rug" Kazley.  The Brothers Collection is home to some stellar Oldsmobiles, and this one is among the best!