so its confirmed that the 340 or 320 pumps will work with the dual 255 hanger

Didn't see it mentioned, will the single Wally 450 pump'd hanger fit a GVR4? If so, I'll take one!

Sorry to bring this back from the dead but are these still available

This is a cool idea but the real winner, IMO, would be to make a hanger/bolt that works on a FWD fuel tank. I broke the bolt on mine and had to remove the tank to get a small plate welded over the hole. There was no recourse for this at all, no aftermarket tank for FWD.

I also feel, that as time moves on more and more people are not going to care what electric pump they're using because they'll switch to mechanical pumps and surge tanks..... I know that's what I'm doing, already have all the parts for it.