we wont start a "pissing" match but these were RFD Eldebrocks and a set of bb3's worked over by a local boy. They were close but the motor shop figured to see more hp out of the bb3's ... time will tell here soon. They new set of bb3's that have been redone by brodix with some help of a big HP engine shop just made 1180hp @ 582ci this wasnt some 17:1 one motor either, thats single alky carb on a brodix intake.