Here are other in-line filters that I have read that others are using:
Fram G6399

Napa Gold 3299

Audi Part Number 811201511D

WIX 33278 (Seems to be obsolete)

I've also seen the Purolator F21111 mentioned, but it doesn't have the larger 1/2" input and output. It is smaller and will not fit my hoses.

I have a secure, protected mount in the trunk for it. What are you using for an inline pre-fuel pump gas filter?
Any other recommendations that are 1/2 in and out?
Thanks!