Thanks for replies guys. It's been around 9 years since I was last in the motor so I probably don't remember every detail, but the Doug Herbert solid rollers went in with the heads on.

73 Challenger 340(416),E-heads, 727, 3.23 SG
2015 Challenger R/T classic B5, wife's car
2010 Ram 3500 Crew Cab SLT dually 4X4
2016 Challenger Hellcat Redline Red A8