wow, forgot about this thread. sorry.
my couplers are silicone couplers that i cut myself from a long tube of it. i got the tube from BBM back when i was working there, they had some leftovers sitting on top of a shelf in the mezzanine...but i found a place locally that carries silicone couplers. i'm pretty sure it's a 1.75 dia 3 ply...i've heard of people going to home depot and using rubber couplers from the plumbing section...would work, but i dont think it would be nearly as resilient, or strong as the silicone.
here's how the cable setup is now...

the fuel rail (standard 16v BBM unit straight off of the shelf)

the brackets for the rail, i'd ideally like something a little sturdier, but the injectors were seated in the injector seats, and i pressed the rail on as far as it would go onto the other end of the injectors, then made the brackets...so it should hold the rail as tight as i had it on there w/o it. i also had to rethread the holes where those bolts go in as they were smaller bolts from the factory...

any other questions? :)
i can get you the part number for my 4 K&N filters, but holy fuck were they expensive...i have more into the 4 filters than i do the rest of the TB setup....$35ea w/ an employee discount!