I got the Mac longtubes and i hate the fuckkers! They are always in my way(Than again, I work on my car alot). When we changed out the heads, the driver side header came down and got wedged behind the bellhousing. Took 2 hours to get a engine sling to move the block a inch to pull the bastards out! Now, as far as power with them I am happy. I just think that on my next setup (a 408 if I have it my way), I will be going for simplicity and get some shorties. I think the 408 will overcome any power loss
