Here is a link to one that would work for you on ebay.
http://www.ebay.com/itm/ZEV-Tech-Fu...458?pt=LH_DefaultDomain_0&hash=item3cf6eb2d52
I have two of them. I only intended on getting one but I ordered the wrong one the first time and decided to keep it and buy another.
I'll be honest, I'm not sure it was worth it. I didn't notice much of an improvement in my accuracy. They feel nice, and I love the feel of them when dry firing. I was not able to use the reduced power striker spring in either glock because with that spring installed the trigger wouldn't reliably reset if I remember correctly, and that accounts for a lot of the reduced trigger pull weight which now I'm unable to take advantage of.
The two guns I installed them on were a gen 4 35 and a gen 3 17L, for some reason despite those two Glocks coming from the factory with the minus connector, they still had pretty heavy triggers with a very energetic break that I didn't care for. All my other Glocks have good triggers and I've put the minus connector in all of them and love the feel and consistency. I like all of them better than the two zev tech trigger kits... but that being said, the zev tech kits were an improvement over the stock triggers on those two particular guns.
I haven't tried to do any adjustments on either of my zev tech triggers, although the screw that holds the trigger safety in came loose on both of them, I used a bit of blue loc tight on both of them and they have stayed put since.
I'm just not sure what to tell you. I would almost say that they didn't meet my expectations, but maybe my expectations were too high. They do feel nice. I'm also still getting used to them as I feel that the way I pull the trigger has a larger effect on my accuracy with the zev tech triggers than a normal Glock trigger... but for some odd reason it's more difficult for me to be consistent with the zev triggers than a stock glock trigger.
I feel like I may be adding to your confusion rather than helping.
I guess if you want to try one out, go for it, but just get one to start to see if you like it. I still think they are the best aftermarket trigger kit available for the Glocks, I think I just feel weird about not having one standard feel across the board for all my Glocks, and like I said, I'm still getting used to the zev tech triggers.
I think in the end, for me, they offer a nicer feel and a nice look but they don't help my accuracy. If I tried adjusting them it might help, and if I could use the reduced power striker spring it might help, but for now, I've got what I got and that's just the way it is. Having close to $400 in the two of them is a stretch in my mind regarding my personal perception of their performance, but your mileage may vary.