Been slacking on the Locost lately. I recently bought a Smart and playing with that has been eating up my spare time. BTW I think a smart would make a great rear engine locost build donor but anyway.....
Latest work has been on the fuel tank and pump. I don't have the ability to weld Aluminum so I outsourced the tank to Boyd Welding in Ocala, FL-
http://www.boydwelding.com. I sent them over a drawing of my tank and they promptly sent back a quote. The tank came out great and they were super easy to deal with. Total cost shipped was $495 with roll over vent and fuel filler neck/gas cap.
The fuel pump route I went required some additional work on the tank that they couldn't do. I used the pump assembly out of a 2015 Camaro 6.2l. This made the whole fuel pump, pick up, regulator and fuel sender figuring out way easy. It includes all of it in one package. It's also only $120 off Rock Auto for an OEM AC Delco unit. That's substantially less than you'd pay for all those bits seperately.
It also has a connection for a secondary pick up. The pump sits on the left side of the tank and the pick up will go over to the right with a walbro pick up on it. The cool thing about the secondary pick up is it doesn't matter if it sees air. It works off a venturi that doesn't care if it sucks air. The venturi works off the fuel dumped by the regulator which sucks from the second pick up. That pick up then dumps into the cup the pump sits in. Any excess fuel just overflows back into the tank. Boyd doesn't have the fuel pump ring that the pump needs to attach the tank. I had to purchase that seperately from-
https://www.vaporworx.com/product/gm5al/. Then have it welded in locally.
Straps for it are fabbed and just need to put some rubber on everything to insulate the mounting.