Technique. Apply brake bring revs up whilst/at the same time releasing the clutch. No need for big revs clutch dumps. Once its spinning do what ever you want. I can get second stationary. That requires a very quick change from 6500-7000rpm 1st.
B120dat are you down in brissie yet? By all means come out to my private road.
Edit: Woody diff definately isnt sick. Its a good nick ute diff. Used to do it with the standards diffs to when they were still in good nick, lol. I believe its just because the car it so light and once it breaks traction theres no load to make it go single. Sure if it starts single shes single the whole way.
Ps now you can see why the h145 couldnt cut it. Actually never broke doing anything like this. Just second gear chirps killed them. Still standard original 56a gearbox aswell still going strong somehow.