Bio, yes, I have a set on the bench and have posted builds on several other TF builds on here. I used the HS rockers on the last build that produced 788hp. I didn’t care for the, what I thought was, excessive play on the roller tip shaft. It seemed to be much more than I remember and could be problematic with higher spring loads. I have also used Jesel and T&D over the years on many builds, but usually with Indy heads. I also used the Crower independent rocker system on a small block build on here with Edelbrock Victor heads. I prefer the quality and accuracy of these rocker Systems over the beefy HS systems. Especially the independent shaft, bedplate style systems which require milling. The Crower rockers were dead on. I have not checked to see if either company make a bolt on setup specifically for the TF heads. I’ll have to do some research.