I've read a lot of positive things about it...
one thing is, it takes a lot of work and time to replace the transom, make sure you know what you're getting yourslef into
and that you have enough space and the right tools...
you basically have to remove the complete top of your boat, so that you're only left with the "v" and transom, then you have to chip out the wood, make a cast on the inside of the transom, then pour it in and let it cure, then put everything back together
it's not a 2 day job... be weary of tackling this project yourself...