Ant
http://www.universalspinners.com/autoparts.html
Check this out..... Allen (Ironworks) gave me this lead and we had discussions with Michael....and we came up with a soloution.....for a Dominator carb.... 7 5/16" opening.....
The height above the carb is about 2" with a nice bell entry to the carb ..
We went to a 16" filter and a 14" Extreme Top with an adapter for the 14" top to the air filter...... and a 2" dropped base....
Flow is good ....and in excess of 1200 cfm ...and will come from our reverse hood scoop..... back of hood....
Best soloution we have found yet...
Morris