Dear All,
As you know, the stock fan of original Xbox is quite loud, and given the age about 15 to 16 years I decided to upgrade/replace the fan, read some forums and some suggest the Nexus 70mm Real Silence fan, which has an airflow of 21.1 CFM, but since I'm from Europe this fan is not available almost in no place, owing probably to being an older fan design, looked for alternatives, and some suggested a Noctua 80mm which we need to butch the HDD plastic bay to fit on the box, but there's also a 60mm model, which fits excellently which is NF-A6x25 FLX. that address an airflow of 29,2 CFM which is better than the first solution Nexus 70 mm.
Alright connected the fan with the 4 anti vibration rubbers and this is the final result.
Still haven't replace the thermal paste, that's going to be my next project, really now I have a quiet XBOX on my hands