Most .40-.46 size trainers are designed around the lower powered O.S. LA engines.

A typical .40-.46 trainer uses an O.S. .46 LA engine. These produce about 1.2hp if you go by the manufacturer's own ratings.

That is the equivalent of a standard .32 size ABC engine.

The .60 LA ( often used in .60 trainers ) produces about 1.7hp... about the same as most ABC .46 engines... and about the same as your engine!

So go for it!