Beat me to it, but springs and emulators also mean changing the fork oil to a different weight in most cases.
Attached photos for rough 300 fork tube size. Side note: the 250 sized intiminators fit my forks without issue, but I haven't had a chance to do any real running on them since the winter build. Hilariously/depressingly sidelined for other reasons. Also, Sonic Springs are cheaper, if that's a concern for you. They also come with extra washers and preload spacer material, which is nice of them.