Hat spacer for PSI ??

Hello, have any of you got any information regarding hat spacers for PSI low profile square door injectors? I have one that is on a Littlefield 14-71 Hi-helix blower, the hat has a Newberry adapter that has a 10.5" (Bird) opening, but the top of the blower is 15" (Buzzard), so the back 4.5" are covered by the BNR adapter.

Is a hat spacer advantageous on a PSI, and if so, should the spacer be 10.5 or 15" on the bottom (blower side)? The top of the spacer would need to be 10.5 to fit the Newberry adapter. And also is any performance gained by the divider plate? If the back 4.5" of the top blower opening is plated off, should I be concerned that there are not any nozzles lubricating the back 5-6" of the rotors? The blower case does not have rear port nozzles. And what about the air divider/diverter inside the spacer? I think I read recently that DMPE is moving away from the dividers.

Thanks
Chris

 

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http://www.rbssuperchargers.com/Store_Detail.cfm?ID=140577&InfoID=3921

Carl Spiering is suppose to make a real trick one.