Talked nizpro about box ! They use to get Kewish to do there box's for them! And have been told that there box is a copy of yarra valley box! And don't think my tuner would like nizpro seeing what he is doing tuning side of things ! Plus yarra valley input shaft. Is bigger than both Kewish/ nizpro sod if there is any one out there that has a box done by yarra valley join inn!!!