Well first of all street/strip is a relative term. It depends on your definition of what constitutes a street engine. Its really just a matter of how radical a combination your willing to endure on the street and how often it will be street driven. Some people build pretty radical engines for the street that idle rough at 1200 rpm and some prefer a smoother idle at the expense of power. I think you need to be abit more specific as to whether this truck is going to be more street or more strip. Also what horsepower numbers are you looking for. With your truck being a 1957 vintage emissions dont apply so it leaves the possibilities wide open.