MOSS (cruiserbits.com) has the
Air Max Intake System 
with a K&N filter and
no modifications necessary for the 2003 GT Turbo for $339.95 (Part # 001-336). Would I get a
substantial increase in horsepower (5 to 12 more HP) with this modification? Would there be a
noticeable performance increase or would it "just be
subtle" if any?
Thanks...[8)]