Here is a pic showing the existing tips and the vertical lip to the back deck that I was refering to. The headers are some CMI's that I used for mockup purposes. The headers as Lightning made them cut into the lip by about 3/4" on the left side. The bung sticks up about 3/4" and is rotated 20 degrees towords the center. A AN adapter and a fitting will add a good 1-1/2" to that 3/4". Pointing the fitting down back or straight out does not solve the problem! Using a forged 90* fitting doesn't help either!