Don't know about that kit specifically but after buying a 2nd hand box, rebuild kit and labour costs, it may not make economical sense considering new gearboxes are around 3000 - 3500 aud. There is also a lot of parts in a 2nd hand box that may be worn and not incuded in that rebuild kit either. Unless you know what you're doing and rebuilding it yourself, probably not worth the hassle and uncertainty.