I always heard growing up that Cheverolet motors didn't like forced air induction. That is why they drew in the cool air from the base of the windshield. Ford motors responded well with the forced air though. Such as the early galaxy, and falcon thunderbolt cars.
Someone may have run a chevy with forced air and had good luck with it.
Now speaking of hoods, while everyone opts to run the 69 "cowl hood" on any first ten, another cool looking hood for a 67 or 68 is the DANA Chevrolet hood. I know there is a guy remaking them from a original hood or the original mold, you just have to look him up. I can look for a pic of the hood, if you aren't familiar with it.
I am not familiar with a good supplier for the stinger hood, sorry.