tapered intakes generate more velocity earlier than constant diameter short ram intakes like the AEM. Yeah you definitely want a short ram with a JRSC. Don't know about the fitment issue for the J's and the lower mounting position of the SC though. You may have to do some relocating of the A/C.knightridergsr on Sep/10/02 said:i was taking a look at it, what differences do you think there would be with the j's short tapered compared to a aem short ram on a supercharged car? where would you gain or loose power and how much of a difference does it make?