I have had all kinds of Hemis myself, and I get to work on many others. Mostly stockish....But we do also race them and know what works and what doesn't...

90% of the people I know only street them....Me, I must be crazy to race them. Blown up more than a few over the years. I wish parts were easier to get, but I must like a challenge.

Dual quads are a challenge. You need an AFR gauge, Anything you change takes a different jetting. And eddy carbs are tough. They really do not have bowls big enough for the squirter shot required, and that stepped rod, you can never get the right sizes.....You can even kill it off more with a dual plan dual quad which I would never run.

Here is our little 484 pump gas Hemi.....Not even hooking!

https://www.youtube.com/watch?v=mrm62S2Fmow