Nissan Navara/Australia

I have a 1989 Nissan Navara 2WD here in Australia that has been reborn.It has had an engine and transmission change from the old Z24 Manual configuration to that of a Holden V6 combined with the matching auto transmission.Total cost is still ongoing.Now I have differential ratio issues.Anybody contemplating doing this sort of conversion only need to ask as I will freely give advice.

Regards Andrew