Carb Spacer help - what's on your intake

I have a Jomar Power Cone (5016X) on a single 440 Victor intake.

Last year I bought a Magna Fuel Anti Reversion MP-5006 {shear plate} I am thinking about installing on the Victor, but I'll have to machine out the flange.

Then I might go totally crazy, machine the intake and a 1/2" Jomar phenolic open spacer to stack the shear plate on top of it. That way I have isolation and reversion.

Tom