Back at the hangar after a couple of weeks away to work Twins games.
Van's swapped out the correct fuel valve for the one they had sent me so I drilled the 1/4" hole and then installed it, the fuel line from the tank matched up just fine. Torqued it to 115 inch pounds and then riveted on the little "locking plate."
I'm also taking off those bulkhead fittings up front to get the spacer plate to fit better. In order to do it, though, I need to buy another open box wrench and grind it down to allow it to work in close quarters.