I had a ton of work done to the whole motor, including the heads. Doug's intake is no doubt going to help out a bunch on the 6.0. I am more than pleased with the quality of the intake I have from FCDP. Its an EGR cooler deleted intake, not a ported intake. It does exactly what I wanted it to do. DO NOT make this post into a pissing match concerning someone elses intake. Doug's intake is the next step IMHO, your comparing apples to oranges Rob, my opinion of FCDP's product has nothing to do with sponsorship, and KMFA for the insinuation. I have always given a 100% accurate description of anything I have tried, good or bad.