So in the picture below you can see the bracket is on the exhaust but there is no where to bolt it too

Presumably I need one of these...
https://m.minispares...ni~shop/GEX7526
But wondering if / when I bolt it to the gearbox am I going to loose oil out of the box? Looks like I will have to undo the diff housing(?) bolts?
Also, what size bolt am I going to need to bolt the gearbox bracket to the exhaust bracket?
Sorry for the long post and thanks for the help!
