408 on dyno, what will it make?

No
I'm not! The intake is very capable and proven to be so over and over again for many years. I didn't think the Dyno graph would look that good or go 500hp.

Beautiful job! Well done!
Enjoy that sucker Greg!

Did today Dyno it with the smaller headers?
No time to dyno with small headers. According to Ron who ran the dyno, due to the step to 1 3/4 they would be about the same, except more torque down low.