Top feed air filter good/bad

Top feed air filter like the K&N extreme filter top?
This is what I think your ref'ing.

I run one one my 360 w/a 750 Edelbrock. I have the required clearance recommend by K&N above the carb. I forget the clearance amount. It was something like 2 or 2-1/2 inches.
There is no issue with it.