from past experience the blower motor is going to like the bigger flowing head..the CNC from the factory is always better than out of the box head ..but these head guys can find more ponies with their personal blending etc...
this can also turn into much more...what static compression you going with ?..alcohol likes 11-12-1 static compression..
just for the record i DO NOT know where your getting your heads..but when i browse the classifieds here on RJ or anywhere else..if i see the word 'PORTED" other than a factory CNC job..i will Stay away..A UN-QUALIFIED person whittling on a set of heads can acutually hurt them more then help them although they made them bigger...
this is from me to you ..please be very leary of who your buying the heads from that states they have ported their own heads..
YOU PROLLY ALREADY KNOW THIS BUT I FELT LIKE I SHOULD SAY SOMETHING. Cause i see a bunch of heads for sale ebverywhere
bRIAN
__________________
Bjuice..
"I'M YOUR HUCKLEBERRY ! "