The big body Impala SS's have a following due to being the jump back into a "new" muscle car era. You got this big brash car, LT1 motor, decent gearing, excellent comfort and road manners matched with fairly decent fuel economy. Plus, it was a step UP from the police package, which raised a lot of eyebrows at the time. The cars modify EXTREMELY easy, it is hard to find one stock. Quite simple to bump it from the stock 260 hp to over 400, and retain the mpg. Plus, they have a good, mean look to them. It's kind of a barbarian with a black tie.