Quick pic of the Carter 4070 fuel pump and Earl’s filter I put on the bug. The hose is 5/16″ from the tank to filter, then from the filter to pump. Fuel pump to the hard body line is 7mm VW made for fuel injected cars in the mid 70s. To get more gas in the system, I installed a larger fuel outlet in the bottom of the tank that I bought from Aircooled.net. I also added a relay to the pump’s + line to protect both the pump and my wiring from surges.