EagleMark - Standard Dual Quad measures 6-7/16 on center. My setup is 5-1/4 on center. I did that for clearance to the water neck, distributor, and to make the plenum volume as small as possible, and I knew I could then fit them in one air cleaner.

Six_Shooter - Well the last time I tried it, I loaded the bin to the AutoProm, then turned on emulation, then remembered to change the mask. That didn't work. I will try changing the mask first then load, then emulate.