I just went with a Y on top of the tranny and fed both rails. Mainly because I wanted to make sure to not starve one side, as well as I dont want to trap any "trash" at the end of one rail, like what has happened to stock setups. I tried to mirror the link I posted, but It wasnt possible with the stock intake due to several clearance issues, which I know you wont have these problems...

It will get really expensive, really fast.

 

No kidding about AN fittings being expensive. My complete parts list for the return setup im planning is right around $1100. Good news is I am building it to handle 3 big pumps so I will never have to worry about fuel. I have around $70 worth of fittings for the bucket alone.