The answer is maybe .
A lot of times yes , but it depends on the differences in dimensions - if any - between manufacturers on a specific subject .
Utilizing some PE will require removal of molded in details .
If you're completely new to PE it might be better to acquire a kit with the PE included or a kit / PE combination you know is compatible .
Usually " most " of the PE will work if you're using it for a kit it doesn't specify . In my experience .
What all does the PE cover ?
Antennas and stuff should work .
Doors . flaps or other replacement parts might not match up exactly .
and cockpits are always pretty specific to a kit .