Right, I have started creating mounts etc for the EFI kit, its all working etc... but I'm stumped on the fuel line plumbing. The manual does not go into this. I managed to get the seller to send me a digital manual which google doc translated again. No mention of fuel line plumbing.

Basically you have the tank, the tank goes to a filter, then into the injector. The injectors has a return, where does this go?
a) T-connection before/after filter?
b) back into tank (drill new hole and weld a return pipe?
c) whatever you guys suggest ;)

I really am stuck on this as there's no fuel pump either, so I'm guessing its gravity fed like the carb, but looking at some pictures from other build threads I really can't see where the injector return goes too! So please help me out and thanks in advance.