I'd use it before the pump if you can, then dirt won't mess with the check valves on the pump.

Or better yet just use a fuel pump with the built in glass bowl filter, then looks original and in my experience works just as well as an added on filter. No need to cut the fuel lines either.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-