I would be wary of running those, particularly with one tap open at high speed, nothing will kill an aircooled engine as quick as fuel starvation at high speed in warm weather.
Good neoprene fuel line is pretty cheap and if water [I once lived in Townsville] or dirt is a problem you would be much better off running a pair of disposable Ryco filters back up under the aircleaner.
I bet both those Wipac filters be clogged with less than a 1/4 of a level teaspoon of dirt, a Ryco disposable will still pass fuel with four times that amount of crap in one filter, eight times for two filters.
Hot day roaring up the Gillies from Cairns, WFO on and off which will stir up any crap in the tank and all will slurry back toward the fuel taps.
Only good bit is that you could roll back down the hill to Cairns with a dead engine and thankful that a Norton does not have vacuum brakes.
Wipac is a contraction of Wico-Pacy, manufacturers of equipment for small stationary engines, particularly flywheel magnetos for Bantams and such.
Not to suggest that Bantams are stationary engines but bloody close !