Not my favorite lobe,but yes I have.I prefer more rocker & less lobe.Lift may end up same at valve but I think and have found that less lobe lift is...
The -10RI is a better head & your 430ci can definatly use it.However I don't think you are getting the most out of your Dart Pro1 heads.640 hp is way...
Let me say up front that I don't like crate engines.That being said,it is insane to take a brand new engine apart and blueprint it without dynoing it...