Oversized carburetors drowning low-end throttle response, bone-jarring solid motor mounts vibrating every bolt loose in the cabin, cheap aftermarket headers scraping speed bumps, and aggressive race cams that rob all vacuum from your power brakes. Welcome to 21 Classic Muscle Car Upgrades You’ll REGRET – Part 1! In this hard-hitting, practical automotive breakdown, we kick off the first half of our countdown covering modifications #1 through #11 that sound amazing on paper, but turn your dream street machine into a frustrating, undriveable garage queen.
