Comming on nicely and those bulkhead hose connectors are really neat. You could market something like that!
It's worth spending time thoroughly cleaning out your petrol tank at this stage before you put any body work over it.
I've had to clean out my fuel filter twice as I get what looks like a very fine alumininium powder/dust comming through. It is very fine particles and gets past the facet fuel pump filter and clogs the efi filter. It could also be from within the little fuel header tank which was supplied by Marlin?