Have you figured out how to tie-down your injector fuel rail yet? I would try to mount off the ends of the rail, parallel to the injectors, tying into the outside edge of the outside intake runners. I did this on my home-brew EFI V-8 project, but my fuel rails were round. I don't have a good picture of the tie-downs, but if you're interested, I'll try to take one.
This is the best pic I have for now: