Benny:1970 Chevrolet C10
His C10 was black and lowered a little bit. It had some menacing flavor and a solid CB radio system. The movie doesn’t indicate what is under the hood of Benny’s truck but based on the sound it makes I am going out on a limb and assuming it’s a V8.
In 1972 you could a C10 with a 307ci, 350ci, or a 400ci V8 engine. I’d like to think that he went with the 400ci.