I was not aware that they used that core. I thought they used the Spearco core. Atlast thats what tt-petes looks like. Also its a bit on the thin side at 3" which is only good for about 1100CFM I think 4" is good for 1500CFM. Though the FMIC is becaus they have less of a pressure drop. I think the XS engineering kit uses the 4" core. Both are good for 2K so either way you are in the same position.