I use the indy on my 408. aircleaner just cleared 6 pak hood using a 4150 and a 14" air cleaner with drop base. I now have a problem getting a dominator with a 16"x3.5 moroso air cleaner to clear. the 16" has a 3/4 dropbase. looks like i will have to trim 1" from the drop base and 1" from the intake carb flange. grrrrr