Most muscle car buyers walk right past the 1970 Pontiac Catalina Sport Wagon, but a well-optioned example could be had with the brand-new 455-cubic-inch V8 in up to 370-horsepower HO tune — genuine big-inch muscle wearing a body built to haul six or nine passengers. Only 113 of the 29,394 wagons built that year came with a manual transmission. Read on to find out why this factory sleeper still flies under the radar.