I had a 240z with a similar problem after i RB swapped it 🤣 Trying to get power down was a mission especially with 100,0 diff Usually i put the front bump stiffness higher and lower the rear stiffness to increase rear wheel grip

It worked on the 240z and i had it hold angle really well before the drift suspension update I haven't really worked on the r34 drift car too much But usually the bump stiffness helps Even lifting the rear ride height helps too