Should be completely interchangeable. Did the Trijicons come in the factory packaging? If so, it should list the part number, and you can check against the Trijicon website to make sure they are compatible.
Trjicon Bright & Tough™ Night Sights
Scroll down to the 3914 - either the SA08 or the SA24 will fit your slide just fine.
Again, don't get hung up on the Novaks having a set screw and the Trijicons not having one - the set screw will
not make a difference with the Trijicons.