I previously ran the Crane 1.8's and am now running the Crane 1.7's (still have the 1.8's on my shelf). Nice rocker, well made, fully adjustable. I looked at the shaft mounts, but the consensus was that some ovalizing of the pushrod holes was required so the pushrods wouldn't contact the head. My Dart heads would have required major work for this. Also, at least when I bought mine, the Yella Terra was causing some float issues for some people. The new ones look excellent though, I am installing a set next week along with a cam for a friend. A couple of people have had issues with the Scorpions so they would be of concern for me unless there is some other problem that they failed, but so far no further feedback from those who had the problem.
Last edited by vettenuts; Aug 17, 2007 at 09:05 AM.