Fancy fuel tank - worth it? Hot Rod City Garage

A sump has a purpose that I doubt any sending unit can replicate, lowest, rearmost part of the tank is where the fuel will be during hard acceleration. Couple that with the baffles in the aluminum tank (for when there is only a few gallons in it) and there is no sending unit around that will out perform it, least that is what I think......

I do understand what you're saying but currently my OE tank does not have a sump or baffles. This is a 12.0 car and the P.O. never mentioned any issues with starvation with this system so I believe it to be OK. The new larger/lower pickup can only help IMO.

In the course of doing all this stuff, I have run into a delivery problem to the extent where there is no fuel in the carb bowls, nothing is getting sucked out of the tank and the car won't start. Not sure if there is an air leak, bad restriction or a mechanical issue but I am trying to sort it out.

Again, I think a larger pickup that sits deeper in the tank can only benefit.