Hi guys havnt been on for quite a while i have a spare 5k i wanna put into my au2 4.0 auto ute, so far its got extractors and 2.5in pipe, ss cold induction, jmm dev5 cam and timing gear, i was thinking either a stally and diff gears would be next performance wise? or just convert to manual? any other opinions are more then welcomed, apart from drop a 5l in it as the ute does about 700k a week for work and a 5l is out of the question!
Thanks in advance

I guess if you're using it for work at 700ks a week will you be comfortable using the manual all the time? If you think you would be then the 5 or maybe a 6speed would be a good option to go, and you would most likely get better economy from the manual, as long as you dont "Drive like you stole it!" everywhere. An LSD would be good but no much of a performance gain other than 2 instead of 1 wheel spinning.