Inline fuel pump vs tank fuel pump
Unless you have some kind of baffle structure in the tank, get used to keeping the tank above half full or the engine will stall when the pickup is uncovered when you go around corners.
I've got the Walbro 255 externally mounted under the passenger seat right now, with a cobbled up factory pickup. I'm probably going to go with some kind of in-tank set up because:
- I've got the typical sending unit ring/gasket drip
- The pump noise is really annoying
- There's some kind of mis match with the replacement sending unit and the fuel gauge makes no sense
- Unbaffled tank is downright dangerous when it starts getting low and stalls at bad times