Did you have the blower all the way on? Maybe you thought it was hitting but you didn't quite have the blower on right yet. You have to put the fuel rail AND regulator on before the blower unfortunately, can't get to the back regulator bolt. I did remove the regulator without pulling the blower by undoing the 2 fuel rail to intake bolts and the leaning the fuel rail over a bit. It had a fuel leak which turned out to be a missing O ring. CHECK YOUR O RINGS BEFORE INSTALLING!Sure looks like it should fit. I wonder why I had a problem. I think in the spring I may look at trying it again. Hopefully Whipple did not slightly change the air intake on their latest 2.3 and that is my problem. The back vacuum tap looks to be close but I don't think that was my issue. Thanks for taking the time to post the pictures!