Carb Spacer help - what's on your intake

I'm trying to get my carb dialed in with only the 1/2" nitrous plate beneath it. I also have a huge cam (.652", [email protected]) and it definitely starts to make power above 3000. Haven't had the nerve or the road to take it above 5000 yet, but it just keeps pulling harder!

I decided to crutch the predictable lack of low-end on the street with a dual plane manifold (RPM air-gap), relatively small 800 double pumper, and 1-3/4" headers despite the know-it-alls saying how mismatched that is and it won't work. It may give up some top end hp but the midrange is very entertaining!
:steering:

No idea what an additional 1/2" or 1" spacer would do... again since it's mostly street-driven I doubt I'd notice the difference. Might be worth a try eventually?