The wing area is small compared to a few other 3/D type models. I noticed Horizon had the 180 Saito listed at first as an engine choice then changed it to a 150 Saito and the little Evo 26 gass engine they sell.
On the other hand I've seen the Brison 2.4 in action many times and wouldn't worry about mounting it on one of these at all.
Weight is always a factor with a gasser. Bet this thing would scream with an OS 160FX.
Plenty of room in these cowlings for sure.