Hi. Iam currently upgrading my struts in my KE20 and am using RA60 struts & brakes. You have to remove & use the existing ke25 sping seats onto the ra60 strut leg or use coil-overs. To get enough travel in your shock when lowered I've been told you can put in ae82 or ae92 inserts but have put a spacer in the bottom of the strut leg? The struts will give you a 258mm vented disc.
Hope this is a help
Regards Chris