My cousin was married to a guy who had a 71 340 Duster. In stock trim it was one of the fastest car in our town. After a cam change, he added a six pack and I can tell you, what was a very fast 340 Duster became a wicked fast 340 Duster. If you have a six pack set-up but don't know how to tune it, it's pretty much a big aggravation. That Duster would still get squirrelly when shifted into 3rd gear. Fastest car I ever put my butt in.
