The Idea!!!!

Ok here we go my idea is to build a car that can be driven daily and get good gas mileage! So I have a 1968 4 door dart that I got from my good buddy MikeBee. The dude he got it from sold all the parts of it that wound fit on 2 door but the body was rust free. So Mike couldn't kill it. It doesn't have fenders bumpers motor trans and a lot of other sh*t. So I can do what I want with it maybe slant 6 with a 4 speed overdrive or a 2.4 with a 5 speed or maybe a auto trans. I'm thinking glass hood,fenders,trunk,and bumpers. And I'm looking for 30 mpg's I don't think it shouldn't be to hard they say that dart lites got 36 hwy. So what's your thoughts?:tard::usa2: