If the classic 911 market has scared you, the Mercedes-Benz SECs are a little too soft and you worry about a foray into 928 ownership costs, M6 and M635CSi are a great alternative for a high-speed weekend transport for two. The U.S. received the quite potent and catalyst-equipped S38 motor, while the original daddy M635CSi got the full-fat M88 motor right out of the M1. With nearly 300 horsepower on tap, the M88 and those beautiful headers was a healthy upgrade from the U.S. version. If that wasn’t enough, you also got the much cleaner looking bumpers to go along with the extra ponies. Many M635s made it here thanks to the grey market, and occasionally one pops up for sale, such as today’s silver example: