Fuel filler pipes

Ok, who got the go to source for the reproduction filler tubes for mopars? Seen some models available. Of course, the 71 Dart is the one I need. But the earlier 68 to 70 have there advantages, so not picky. Stainless would be great. The rust on the old ones is not good. Or is the fuel cell option the real answer to fuel tank blues?
Putting in the electric fuel pump system also. Thanks for your input guys. Hoping to get it as right as possible the first time around on the replacement of fuel system.
Oh, 360/408 stoker going in it. 727 trans. 770 Holley street avenger carb. 323 gears/ 742 case now. can go 355/ rebuilt 489 locker sitting around. Eddy heads, tti headers. Lots of other upgrades as usual.:D