Anyone use a Speedhut Fuel Level Sender?
 

They offer the sender with different length posts, designed for gas tanks of different depths. https://www.speedhut.com/ecommerce/p...al-Sender-(3-5
They go from 3.5" to 12".
Does anyone with a 3rd gen have one installed? If so, what length was the best fit?

Did you ever find out what length works best?

Curious to know how you are planning to install said sender should you find a suitable length. How will that properly seal at the top entry point of the cover?

We use a VDO float in tube sender in a fuel tank that's 55mm deeper than stock (110 litre), cheaper than that thing from memory.

In this case, there's a doubler installed, tapped for the appropriate PCD, VDO sell cork and rubber gaskets to suit.

Don't know the depth but have a few stock tanks around, assuming the sender is installed in the deep section of the tank, so you can access and install the doubler, I could measure it if you knew exactly where you wanted to install it. You'll find your fuel gauge will almost certainly be incorrect, which will be somewhat inconvenient on a street car, so you'll have to install an aftermarket one.