Air cleaner with RPM air gap

I have a RPM air gap on my Duster (demon clone with Dart hood). I run a Holley 750 double pumper with a 1" carb spacer and a 13" Mopar Performance air cleaner lid using a drop base from a Ford racing air cleaner with a 2.3" tall K&N element. I even run a small spacer under the air cleaner to clear my throttle linkage at WOT. Mancini sells a drop base now for the mopar performance air cleaners, but that wasn't available when I did mine.

Here's the 2.3" tall air filter I use
https://www.summitracing.com/parts/knn-e-2865
This is the Ford Racing air cleaner I stole the drop base from. It's advertised as a .625" drop but that's for a Ford so I don't know if the reference is the same
https://www.summitracing.com/parts/pro-302-350?seid=srese1&gclid=CJvxyoGrt8QCFUiEfgodoUgASA

Here's the Mancini drop base for a 13" air cleaner, not sure how this one fits but Mancini sells it specifically for the MP finned covers.
Mancini Racing "Low Pro" Air Cleaner Baseplate

And here's a few pictures of the set up in the car. Pardon my dirt, I've been visiting my family a lot and they live down a dirt road. Anyway, in the first picture you can see the small spacer I run, this was modified from one of those generic air cleaner adaptor kits, I cut it down to match my needs. Second picture is everything assembled. There isn't a ton of space, but everything clears.

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