No problems just make sure you run a vented cap...And just keep in mind you have no provision for fuel expansion on a hot day other than climbing the neck and out the vented cap in a worst case scenario... Just don't overfill it for the summer..The 49 state single vent for 70 was routed inside the tank at the very top and exited on the top, right side just as the ECS versions minus the other tubes...So if the fuel got high enough it pushed through the tube and emptied into the frame rail ...Crude but effective... And would be an absolute nightmare for the tree huggers of 1970 let alone 2021...