I acquired a set on a car I bought. They are the latest versions. They were already ported and had the wrong rockerarm set up on it. They weren't set up with the offset. So I got some Isky 1.6 rockers with the offset and had a valve job done and also took out the receiver grooves.
There are some problems with some of the earlier versions, so I think I am good to go with these after having them on a car and driving it for a while.
These are repacing some ported irons so I am curious how much of a gain I will get.