Short ram systems have better flow characteristics, but cold air intakes are MUCH better because of the outside air source. Colder air is more dense, creating a better burn. With a short ram you'll be lucky to even gain 1 hp. Cold air you'll probably gain 2-3 hp. Not much at all, but for a first project, i'd go with the short ram system. then if you want, you could buy the extra pipe and make it a cold air.