Reinforce that firewall!! Mine is powered with the Fuji 50EI, and the firewall is pinned, blocked and glassed. I bought mine used (here on marketplace) but I've been through it with a fine toothed comb. All ARF's need the gear reinforced in whatever fashion you choose. It's a fairly heavy model, and if your strip isn't perfect, can get abused on landing. I gotta say, I love mine, and it has proven to be one of my favorite flyers. The only downside? It takes forever to set-up and tear down! But the in between is great.

BTW, mine has four aileron servos, and has jacks in the top of the fuse to plug the top wing into. Slick set-up. (Thanks Speedy!)