Mock up means ,I bolted everything together to make sure it would all fit. I had to pull it to put a roll cage in. And no my motor is not currently together the head is at Jet hot getting coated (Thermal barrier coatings) along w/ my turbo exaust housing. How can you tell cfm of a head when it is together? I have never heard of being able to do this. And when I went to buy my head I went to Louis first. He quoted me over 500cfm for a 22r race head. LC quoted me 250 cfm, I posted that on CT and no one could believe the # Louis had on his web sight, so I went w/ LC. If their folw bench is wrong then I was ripped off. But with the info I had I made the best choice for my situtation. And by the way my motor could be running right now, I just preferr to do everything possible before I put it together. You should understand that since you are now having to beef up your engine. If you want to drive down this weekend (or tonight) to SD I will show you all the recipites and parts, that way you can assure yourself that I am for real. Anyone who can put together something like I have will take their time, I have put over 10,000 into that truck and I am not made of money. Another $5000 and I'll be drifting, so dought me all you want, I know what I have and how much I've spent, plus I'm not trying to build a little puss engine that won't hold up, I want the best, and I can wail until I can afford it.Racer_X said:what the hell is a mock up!? does that mean the motor doesn't exist?> because I have a mock up of what my truck will look like- but the key word is WILL, as in NOT CURRENTLY... therefore you really don't know what the head will flow like because you don't have it on a flow bench, currently... hell, LC has been known to f-up their flow charts and info- and frankly until I see your motor, I have have to doubt everything you say!