My Duster has no subframe connectors, just a 6-point 0.134 mild steel roll bar. I've made about 30 passes with the car, and it launches straight and hard. Mid 10's with 1.5 60-foot. No complaints. I was originally going to put connectors in the car, but my friend said not to bother. He's been right about everything else he's suggested. He's a Chevy guy but has been building record-setting cars for many years. Interested in what you guys think.