That air cleaner has been copied lots of times by aftermarket manufacturers and while the details often vary from manufacturer to manufacturer, the same concept is continued.
You can't re-invent the wheel. It still needs to be round.
You can't get the base any lower then the L-88 height. The base is "molded" around a Holley dual feed carb.
The top is tapered down and has the minimum internal clearance to reduce flow loss over the top of the carb.
The only variable is going to be what you use for the filter element.
The GM engineering on it is as good as it can be.
