Quote: Who has a good price and are good at making them make horse power over my set of 440-1s i am going to get a set a little later i would like to keep my motor the same just change the heads my 440-1s are out of the box they have no port work on them do you all think 572-13s will make 50 to 100 more HP over my 440-1s THANKS for any help .
whats it run now and what are you looking to run in the future? dj
