Did They Make Square Bore AVS Carbs Made That Only Had The Small Bolt Pattern On The Base Plate?

Bewy said

Making a spacer is a LOT of work to mount carb that can easily be drilled to work with your intake......... & it will not harm or weaken the carbs.
I have TWO engines that have 4500 Holley bolt pattern intakes......& they TQs bolted directly to them without a spacer.

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They aren't that hard for me. I just have to draw them out in CAD and run them on the CNC mill.

Tom