This is such a good topic despite it being discussed a lot over the years. I'm in the same boat as the OP. I have a stock eaton now but I want to upgrade the blower but I do not feel the need going with a whipple 2.9 or a VMP 2.65. Its a street driven show car and I want in the 600 range and I have no plans of running E85 and its not going to the track other than maybe a few trips here and there. From what I have been reading the 2.3 is such a great blower for just a street driven car that wants to hit hard in the 600 range Just sucks so much that @VMP Performance pulled the 2.3 off their line up. Would make so much more sense from a consumer stand point to have that option of the 2.3 for street driven cars that want in the 600 range and then the Gen3R for the guys looking for big numbers on built motors and on E85. I've considered going with whipple just because the 2.3 is still available but at this point I'd take a used 2.3 VMP over a new whipple just because I have heard so many good things about it.