[NSW] Changing gearbox ratio in my vy

[HERONVY]

Hi guys, for those of you who follow my ride thread you would know that i fitted a 3.89 diff to the car a while ago, but after driving her around every day since i'm a bit sick of taking off in second gear as first is just way too short and all of the other gears seem to only be just tall enough when i put my foot down.

I dont want to swap out my ratio diff as i like the feel of the take off

How much roughly do you guys think itd cost me to get my gearbox ratio changed to a taller ratio? I want to keep the 5 speed as i dont see the point of putting a t56 in there and having 2 overdrives lol.

Any help would be great, cheers