One of our toilets started leaking recently. It was headed downhill rather quickly and it pretty much needed to be gutted out and have everything replaced, so I decided to pick up a HydroKit Dual Flush Kit instead of going with the standard parts.
In hindsight, I probably wouldn't use one of these kits for a smaller tanked toilet like this one again, but the other two toilets in the house are 50 gallon per flush monsters, so they should have no problem with one fitting. It definitely went over the 10-15 minute install time advertised on the box, but I can chalk that up to it being my first time putting one in and the alterations I had to make to get it to fit.
I still stand by my recommendation of getting one for larger toilets, but I have to knock my overall opinion of the product down a bit because of the lack of warning about smaller tanks. I can't imagine how many people have bought these kits just to get halfway done and find out it won't work on their toilet.
Thanks for reading!
