Yeah really. Victors, w2's, all high priced options on their own not to mention scrapping all my existing valve train, intake manifold, tti headers, etc. Not worth the cost and hassle when similar flow numbers are available from less expensive, standard valve train, standard intake, exhaust port heads. This all makes the Promaxx look like the best bet as long as I'm not restricting the engines potential by a huge amount. I'm just in the dark about what the noticable difference on my build would be between 285 and 300 cfm/intake... are those last 15 cfm only usable approaching my 7k rev limit or do they affect the entire rev range?