The combination of the RV-8's available space and the size of the G3X Touch leaves very few options. Conversely, it is ripe for a pre-built panel option from one of the VAF advertisers.
I've seen a couple more examples with the same layout - avionics stack on the left and backup instruments on the right with the G3X Touch is just right of center to allow for the standard avionics rack width on the left.