Other brakes for Evo RoadKing from 1994

Don’t be happy with the braking performance of my thicknesses – I have tested both sinter metal and organic coverings now..just a little better, last week with blocked and slipped front wheel almost descended. So: I would like to put other brakes on it, with the same shots (2 discs), one can install newer brakes from Harley without any changes or has from you someone experience with improved brake performance. Unfortunately also can not be expensive, so up to 500 E uro complete. Many thanks to all late brakes ! nothing butverdrus