I am looking for a Weiand tunnel ram top for 4500's, dominator carbs. The Boss Hemi tunnel ram I have for the Engine Masters is for 4150's. I am not allowed th modify the outside of the intake, and there will be air leaks if I machine the exisisting top to the size of 4500's. A plenum top for either a CJ 429 or Boss 429 tunnel ram will work. Thanks, Kaase