I just got my Marti report, and it states that my car originaly had a shaker hood scoop on top of a 351w 2v. Now it has a 351c 2v and a standard bolt on fake scoop. The 351w I will be installing here shortly as I have on laying around my garage. How much cash and work is involved in installing a shaker assembly for a 351w? Also, the engine to be installed is a very warmed up 408, can you use a shaker scoop on an open element filter, or will the shaker assembly breath well enough for the 408 to get the proper airflow?