I just bought one of those Speedway adapters so I I can test run both 2G's and 94's on my test engine. It appears to be a nice piece. I am using it with the 4 bolt side towards the engine and it works fine that way. There was a review on Speedway that said the when used the other way, it is difficult to get the third bolt on the back on. You have to drill out the threads on the side that goes over the mounting studs, of course.