If I remember right... the 8896 is a 3 circuit carb
and the 9375 is the 2 circuit carb(if I'm remembering the
9375 number right)... so people like the 2 circuit carb
because its easier to fine tune... BUT the 3 circuit
carb has a finer tuning when its dialed in... it has
a mid range that can be cleaned up better than the
2 circuit carb(you really need a wide band O2 to get
it right
I just looked at the numbers and the 9375 looks to
be the NEW dom and IS a 3 circuit carb also.... so
forget the above info of the 2 circuit ...
here is the Holley info... you can see both on their
site for info
http://www.holley.com/data/Products/Technical/199R10595rev1.pdfEDIT
you can look up any of the carb stuff here
http://www.holley.com/TechService/Instructions.asp?query=&page=19 
