What are your goals? Best 60' and ET you want a 3600-3800, and a triple disc is all that will hold up to a modified LS3. FTI is always our 1st choice as we have run most all the well known names through the years in our drag cars. Still a few others that are good as well. With these being lock-up, there is no "loose" feel on the highway and around town unless you stand on it, still feel near stock.