Anyone use a carb spacer with a nitrous plate

When I ran nitrous, I ran mine with the plate on top of the spacer (carb/ N2O plate/ open wood spacer/ manifold)...worked well for the 8 years I ran the bottle every pass down the 1/4 mile from start to finish (spraying 150-180 shot every time). I don't run the bottle anymore, partially due to the cost of refills, but mainly because I got my motor fast enough without. When I ran the bottle all the time, I lived in Colorado (thin air= slow car)...my old 360 combo would run 13.8 @ 101 on the motor and 11.1 @ 121 with a 180 shot. After moving to Indiana and building a stroker, now she runs 10.8's @ 122 on the motor. Sure I could spray it into the 9's, but I would rather have a consistent car that is relativity low cost (runs on pump gas), and low on maintenance (no more bottle refills).....sorry, went off on a tangent there:D