No, they are not. The Evo is narrower across the case and the bolt holes are closer together for and aft.
case lateral longitudinal
Evo 30 38 15 millimeters
LA40-46 32 40.5 17.5
the Evo is more a 25 size case punched out to a larger displacement. It will just about drop in where an LA 25 was, except the bolt holes are .5 mm farther apart.(and it's 2.5 oz. heavier)