Originally Posted by Late Model Racecraft
The 1.9 gets to a point where it is very inefficient, upgrading to the 2.3 ZR1 blower leaves all your factory lines and connections in tact and provides you with a better way to create boost on your car and not have to spin the blower so hard. The 2.3 creates so much more air then the 1.9 that it can produce more power with less boost
What would a 3.6 or 4.Liter Whipple do for you, push 850 to 900 RWHP? At that volume I'm assuming you're going to have to port your heads as this is a COPO setup.