I bought a tank from Rock Valley for my '67 Coronet. They fabricate many tanks for EFI from scratch but given the odd shape of the '66-'67 B-body tank, they modify a Spectra tank for this application. They did a nice job, creating a chamber inside the tank that the pump slips into. I've never had any starvation issues with a low level. It also uses a vertical street rod sending unit that is far more accurate than the aftermarket unit I was using when the car had a carb. My only complaint is that I had to cut a hole in my trunk floor and get a small sheetmetal "hump" fabricated to cover it. Again, that might be unique to the '66-'67 B-body. Honestly though, I would have done this anyway... nothing like having to drop the tank if the fuel pump goes Tango Uniform far away from home. I'm running a Walbro LPH400 pump. Being in the tank, even that particular pump, which is one of the louder in-tank pumps, is way quieter than the Carter electric pump I was using when the car was carbureted.

Check out this thread. You'll have to weed though a bunch of Megasquirt discussion, but eventually the discussion gets heavily into the Tanks Inc setup.

http://www.dodgecharger.com/forum/index.php/topic,99432.0.html

I'm attaching a few pics of my talk. I bought this over 4 years ago and I'm sure there are many more options today.

Best of luck!

I just pulled my tank out again.

I have a Walbro Electric pump in the tank. It is a GSS342 pump that produces 255 lph.

Two other friends got basically the same tank, one for a 70 Challenger and another for a 72 'Cuda and they both had the same pump.

So I do not know where the other info came from.

Finally got my FiTech with Spectra tank install up and running.
Car runs great so far.............

awesome! Which Fitech Efi do you use?

I picked up the 600HP model when they had the $100 rebate this last Christmas.

Using a Megasquirt 2 controlling a Holley Terminator throttle body. Was also using a PWM controller for the Walbro pump but found out Walbro does not recommend using pump controllers. I am back using a mechanical regulator.
It is pretty well dialed in with the exception of IAC and secondary injector tip in. Enjoying the car now, this stuff will be adjusted later.
Craig

If you have fab skills and want a low budget approach- go to the junkyard and pick up a steel fuel tank from an early 90's Ford Explorer. The pump/ tank flange, hanger and vent can be re-used, and if your careful you can reuse the sump (antislosh) from the Explorer tank. The hanger will mate up with a Walbro pump with some mods.