If you do buy that motor you might want to try ebay or another source they have them much cheaper.
From what I would figure it should be a good motor. I wanted to try these but went with the STS instead.
I think this is a great deal. Comes with rdlogic turbo II pipe.
For 170. But the thing is, thats the 512 motor. Im not sure the stats of that. Im thinking the 512tb might be a newer version. You should contact rdlogic to find out before purchasing if you go that route.
But thats a great deal.