What spacer do u guys run with the mafi intake ,ANY?

I feel this is a awesome intake but on a 501 that he wants to footbrake that some type of 1 inch 4 hole spacer be worth a try. My 4150 victor sure loved the 2 inch super Sucker Sucker. Helped me run a 1.26 60 when I had a Bigblock in it. I like the four hole idea to add a little low end torque, but seen the opposite . Maybe a half inch four hole, it might help as a anti reversion device if nothing else. Like the carb staying cooler also since my buddy likes running in the hottest days it seems lol. I wont even go watch them days. Being such a refined intake on a small motor just got me wondering. When You are too broke to work on yours it fun to help a friend!!. Any Ideas we would apreciate. He,s not like me and like trial and error much.

From the testing I have done a 4 hole to open Jomar power cone was best all around.

I'll tell him, much appreciated..,ED