I had my Miata engine rebuilt by them in July of 2012.
They lost one of the engine hooks used to take the engine out of the car, and told me they never had it because they don't use the hooks to move the engine around the shop.
A month after I got the engine in the car it was leaking oil from the rear main seal that they put in. I had it fixed by a different shop and then went and talked to them about it. They said you should have noticed it was not installed correctly when you put the engine back in.
The crank pulley had a wobble and it ended up being that they put the wrong woodruff key in the crank nose, it was about 1/2 an inch shorter than it should have been. I talked to them about it and they said you should have noticed it was the wrong key when you put the engine in the car.
January of 2013 I noticed the water pump was leaking. They put the water pump in but I supplied it. They said every gasket leaks eventually so there is nothing we can do about it, our chance of screwing up a water pump install is just as good as yours.
It is not like my expectations were unreasonably high; I just wanted them to do their job correctly and stand behind their work. I figured if you can rebuild an engine you should know how to put a rear main seal on, you should maybe know what woodruff key to use on that engine, and you should probably be able to install a water pump. Apparently I was wrong.
The engine does have a 1 year workmanship defect warranty on it, but apparently a leaking seal or the wrong woodruff key which they installed is not a workmanship problem.
Here is their website, never have your engine rebuilt by them.