Hi Manch
Something I thought of last night that hasn't seemed to be raised is that if you are upgrading to a Honda GX 120 Engine for your mower you will need to ensure the Clutch assembly is the right diameter for the Honda engine shaft. I think they are 3/4 inch where as briggs are 5/8th. Some of the more experienced forum guys would be able to shed some light on this. I just know when I just purchased my Honda engine I had to upgrade clutch attachment as well.
Jason
