Mike, cool. Didn't know; been 10yrs since I even looked at any of this stuff and they've updated...LOL. My guess is they cast a few because Koffel was most likely seeing guys use the big INDY 440-3X intake on top of their heads.

INDY came out with the 440-3X intake because Ken Lazzeri saw the B1 intake on top of their heads on Fairchild's motor back in the day......LOL. Fact.


"Any fool can know. The point is to understand"

- A. Einstein