Credit: Jose R Garcia Colon & Robert Mandru
UPDATE from Robert Mandru: Have both the 300zx and 350z bracket adapters. They will NOT clear with Evo X 2 piece rotors, maybe just 1 piece. Even with one piece it still wouldn’t clear the inside, rotor too large with the 350z/G35 adapter. The EVO X top hats are too big and will not allow the calipers to bolt up. Probably could do it with the 300zx adapter without modding the caliper but for god sake, you have smaller bolts that are supporting all the strain coming from holding the caliper in place during braking conditions. Not worth it.
In simple terms….. do not bother with the eBay 300zx Caliper Adapters
For better fitment, you are better off with these brackets: https://www.my4dsc.com/autosports-engineering-akebono-big-brake-kit-brackets-nissan-altima-02-06-maxima-95-08/