Part of it might be what determines “doesn’t work”.

The intake in the pic is being run in a car that’s racing in FAST and Supercar...... and what you see is what the owner ended up with while chasing ET/speed.
I did a similar job on one years ago for another competitor in those same racing series...... and he commented that even though it was quicker at the track, the low speed throttle response and snap was def worse.

So, it’s probably not the hot ticket for a mild street/strip 383.