[HardcoreZ28]

I just researched this on TGO a few weeks ago. It will fit with some minor modifications. The boot needs to be cut along with a few other things. You can do a search on there and find the exact details. I ended up using a 4th gen master and keeping my stock booster. I was able to bend the short lines from the master to the prop valve to fit to the shorter 4th gen master without much trouble. If you need any help or tips shoot me a PM. If you change your booster let me know how it turns out.