211/227 @ .050 on a 110 like Comp everything. Low lift. It'll take the 901 spring. The DEH (dual energy hydraulic) was getting similar to the Thumpr and Whiplash in that they had a big duration split and a later intake closing event so they sounded good. They run really well too though. Like I said, you need to find one. That's gonna be the trick. There's a Comp "high lift" with the same duration specs, that's not it.