I had to look up some pics of a TD fuel tank. One possible solution, since it would need to be modified anyhow, would be to modify the tank to accept an in tank electric pump. There are some aftermarket kits available that are made to retro fit to existing tanks. It looks like the opening could be be in the side that points toward the body near the top of the tank. These pump kits will usually have a provision for a return line.

The in tank pump will run cooler and solve the problem of feeding it. External pumps tend to be noisy and can be difficult to get fuel to reliably.

You would need to check with the manufacturer of whatever kit you use to see if it can be mounted in the tank like I described. All of them I have seen are made to mount to the top of a horizontal tank, but as long as the gasket seals all the way around the flange, it should work just as well. The pump hanger would most likely need to be modified to get the pump to hang where you want it.

Another thing, if you run an electric pump, you can reroute the fuel line over the rear of the engine. I'm not sure if this would be advantageous for your setup, but it does help move the fuel lines away from the manifolds on some cars.