Anyone run the 1" aluminum carb spacers on their six-pack setup? I'm wondering if they help power any or are they more trouble than they are worth?

'68 Bee 383/TF/Factory Air...high school sweetheart
'67 GTX Clone project,500 six pack,Hemi4-speed,Dana
05 Dodge Viper, 505 V-10, 6-speed Tremec