Chevy Guy

Really pretty nice looking piece, pricey but keeps fittings better than the silicon couplers, might be worth it from an insurance standpoint. Even a plastic retainer through the engine will at a minimum do some head damage.

inspector12

Hmm looks good, but I've just been buying the Devils Own Nozzle holders and nozzles and drill and taping into the piping.
http://www.alcohol-injection.com/en/5-fittings-tubing