Spacer fits 6-71 thru 16-71's that use the Bug, Bird and most other carbon fiber and new style alum. injectors that use the 13.250" on center bolt pattern on the top of the supercharger.
Top opening is 10.50" x 4.50" and bottom opening is 10.750" x 4.50" with enough material left the racer can do a final blend on the injector or blower to make a perfect fit.
There is a provision to mount the distribution block on the rear so it can be laid down and all the plumbing can be run real clean looking on the injector spacer.
Spacer comes machined with 13.250" and 15.250" blower bolt pattern. If using on a 6 or 8-71 blower the buyer will have to trim off the rear pattern as it will hang over the edge of the blower case.
Spacer is made from billet alum., includes cad plated mounting hardware and both top and bottom mounting surfaces are O-ringed so no gaskets are needed. Spacer weights six pounds as seen in the pictures.