There are a good handful of planes that could be about right for a 26cc gasser:

Goldberg Tiger 1.20
Great Planes Giant Big Stik
Great Planes Giant U Can Do (maybe)
Great Planes Super Stearman
Great Planes Extra 300S 160 (might not be enough, depends what you want to do)
SIG Rascal 110
SIG Four Star 120
SIG Waco SRE
Hangar 9 Sundowner Formula 1
Hangar 9 (or any brand) 1/4 scale Cub
Hangar 9 Cessna 182
Seagull Spacewalker II
Seagull Sparrowhawk

Of course, having a bunch of choices is pretty wothless if you do not like any of them.

In theory, anything that recommends a 1.20 glow engine is a potential match for a 26cc gasser. In reality it's more complicated due to weight, cowl, and oher issues.