[SS427]

I did just find this on line. Now all I have to do is find some photos of the real deal.

"The 1971 Impala received small changes in outward appearance.............Engines included the standard 250 ci 145 bhp I-6 as well as the optional engines: 350 ci 270 bhp V8, 400 ci 255 bhp V8, 402 ci 300 bhp V8 and the 454 ci 365 bhp V8."

"Design changes for 1972 were minimal............It should be noted when making performance comparisons between the 1972 and newer Impalas to the 1971 and older Impalas that there were new methods to determine horsepower ratings. The 1972 and newer cars were rated on net horsepower rather than gross horsepower, which resulted in lower numbers. However, the 365hp 454ci engine from 1971 delivered the same real world performance as the 270hp 454ci from 1972. Engines included the standard 250 ci 110 bhp I-6 as well as the optional engines: 350 ci 200 bhp V8, 400 ci 170 bhp V8 , 402 ci 210 bhp V8 and the 454 ci 270 bhp V8.