Thanks for your responses guys.
Here is the tank that is on the way - it has AN-10 outlet, AN-8 return and AN-8 vent fittings. I called them and I cannot change the spec.
Attachment:
fuel cell.jpg
So I can drop straight down from the AN-10 to AN-6 using a bulkhead fitting in place of the AN-10 outlet?
Then, looking at the chart you linked, the hose that fits this should be 3/8 inch internal diameter.
The pump I was thinking of is something like this one (I could have sworn I saw one half this price before though)
Attachment:
fuel pump.jpg
The specs are - Electric, Inline, 325 gph, 45 psi, 5/16 in. Hose Barb Inlet, Outlet.
I take it that the 3/8 inch hose will still get a tight fit over a 5/16 barb, or will it not?
Thanks again
Martin