There is a sefer אוצר החיים that was published in E”Y by R’ Yosef Scheinberg who was a well known mohel in Yerushalayim. It is a collection of minhagim from Zanz. It is on Hebrewbooks.org, an dthis is the link: http://www.hebrewbooks.org/20741
It needs to be kept in mind that the Divrei Chaim was not consistent with many minhagim, sometimes doing this, other times differently. He certainly had his cheshbonos, and we are not to judge. But many minhagim were not “established”. So these are based on individual reports of what he did, and conflicting reports are more likely both true.
The families who descend from Zanz that uphold many of the minhagim include the chassidus kehilos of Klausenberg, Bobov, Zmigrod, Stropkov. Be aware as well that it is fairly common for rebbes to adopt minhagim that come from other sources, often other ancestors through their wives and other grandmothers. All goes to say that “pure Zanz” hardly exists in terms of minhagim.
My personal suggestion is to recognize the known greatness of the Divrei Chaim, with huge gadlus in Toras Haniglah, Chassidus, & Chesed. I suggest that emulating these would please him more than following his minhagim of specific matters.