Anyone know any good clutches that could take +400 Nm everyday and fit between Pinto and type 9?

I'm currently having a little bit of slippage on bigger gears when I hit boost and I probably have to limit the torque a bit with taking few degrees advance out from 4500 rpm or so.

The clutch is currently on 215 mm Pinto flywheel, clutch cover is stronger than stock but I don't know the exact specs and the clutch plate is a new 4 paddle sintered one. Same clutch worked with the other Sierra that made 380 or so Nm, but now I'm so close to the limit that I will probably have to change it sooner than I would like to.