Dull on the outside and spartan on the inside, this 1966 Plymouth Belvedere is the perfect sleeper thanks to a Hemi swap.

One thing I’ve learned in my time with the Hagerty Community is to never underestimate what they (i.e., YOU) can contribute ...

A quick peek at the VIN reveals that this Challenger wasn't born with a 426-cubic-inch Hemi, but it's still a rare classic.

Back in the 1960s and 1970s, working- and middle-class Americans could afford to buy, drive and even collect muscle cars. Find Out: 7 Luxury SUVs That Will Become Affordable in 2025 Explore More: ...