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so if you did this same set up on a 98-01 5.2 magnum you would prolly be over 300 hrose power
AFAIk all the 5.2 Magnums were rated within 10hp of each other. The 92-93s were 230hp and 94+ were 220hp, unless the 98+ were upped to 230hp again?. Once you start putting them under boost it's unlikely that difference will make any overall power difference as the whole exhaust is under pressure and the manifold/pipe size won't really matter.