Goosey, you're not savvy with this type of comparison.
First of all if you get that 70s car, it'll have the mileage of 10 cars in total which brings in more smoke because of its mileage and OLD engine thus making it non environmental friendly. I doubt you could get one brand new.
For city driving, I don't see why you need 375 hp anyways. Torque is pretty high as well but again, we don't need all that for city driving.
Yes, the Chevy might make your friends go "oooh" but to be honest and speaking in for being a more economical car, I'll go with the Nissan.