I’d say if your in there for a carrier failure it may be worth the money. It’s not a miracle worker but it does close the large gear ratio gap between 1st and 2nd. I say if your already in there and the total cost difference is what 300-400 bucks? Go for it.
That said if your into dig racing through 1st gear only (like stop light to stop light) and your not making enough power to where traction is a major issue, I would stay with the stock ratio.
For most any other purpose I think you’ll be happy with the money spent.