where to get this fitting

[axis45]

I bought a partial water injection kit that contained a nozzle, "nozzle holder" and quik-loc fittings. i used my own pump and switch, it works great and i am very impressed with the results. now i want to help my friend build his and i can get every local exectp for the "nozzle holder" which all it consists of is an extra long 1/4 to 1/8 reducer bushing. you screw the nozzle in one end and the quik-loc fitting in the other. drill and tap the IC pipe to 1/4 NPT and you srew the whole thing in. i cannot find this fitting anywhere, i have seen brass reducers in the the hardware store but these are two short(not enough room for the nozzle strainer), and not tapped all the way though so you can only screw one 1/8 fitting in the top. i could get one from the company selling the kit but they want $20 just for the one fitting and $10 bucks to ship it, yeah sounds like a rip off. any body know where i can get a fitting that will work for this paticular application? thanks in advance