I called south bend to get a price on getting my clutch rebuilt and upgraded. Had a standard 650 hp dual disc, shifted amazing still stock pedal feel. Loved it, then I glazed it over. He recommended lightening my discs to prevent line creep, which has caused me to red light once and deep stage once. He also said lighter discs would shift faster, which I never had a problem with shifting very fast with the old discs at all. I'm worried because he recommended a half weighted pressure plate and a heavier plate load. I'm worried the half weighted pressure plate will cause a heavy pedal at the rpms I shift at causing a slower shift? But I'm not real sure as I've never messed with a clutch like this so if anyone has an opinion on this. Or experience I'd love to hear it. Price on upgrade was 900. But at the same time I'm sure he wouldn't have recommended it if it wouldn't work for my application.said the new setup would hold over 800 hp