IDEA #42 what makes it breath?

I was in a boring design conference today at the Crown Center(but I didn't have to be at work) and I started sketching. I was thinking of all the TRAD-RODS and other unmentionables and it got me thinking about the breathing! What are some of the coolest air filters/ stacks that you have seen?
Here are the sketches from my IDEA # 42 (some are pretty common and some are 1-offs custom built ideas)

 

here is the 2nd page of my ideas. I think the a hurst style sedan (extended of course for the dead guy and all) with no fenders! the exhaust would come out from the sides behind the door into a vertical organ pipe style too.

 

Nice Stream of Conciousness. I do that as well. Just start drawing. I try not to erase any ideas so I can compare the good and bad later.

 

I was trying to come up with things that I could do at the house with minilal tools. Shot bag, grinder/cut of wheel, tin snips, welder.

 

some great ideas there!!
I like all the sixties Badger stuff.