I don't understand you, Suspension? what kind of car you drive?? more that a "engine"? and the same time that you install a piece of pipe with filter with a heat tape you spend more that a engine mods?? with suspension?? as far as i know preludes have a extraordinary suspencion or maybe you a race your car in a track and you need a super hi-performance suspension so then i understand! anyway a AEM inatake (short) is just 150 on ebay which frankly i don't think is so expensive!
Good luck!