I'm using American Eagle (Champion) AE369 -- 2 row, 1" tubes and fits the 3-row mounts (I did shave the sides on my mounts to make sure they don't contact the tank). It has a built in steam port to facilitate LS applications. $200 shipped at Jegs.
http://www.jegs.com/i/Champion-Cooli...AE369/10002/-1