Hello Purchased a 66 Coronet with 440 car had set for 6 years was drivable but did not make the power I thought it should and had set in driveway uncovered and most fasteners/motor under hood have surface rust. Whole build only has 150 miles on it 440 .30 over with Speed Pro L2295F pistons .040 below deck, Comp cam 280H, 452 heads, Edelbrock CH28 intake, 2 500 CFM Edelbrock Carbs, headers, MSD Ready to run dist .373 rear, 2500 stall converter. I was told it had flat top pistons I pulled motor and heads and found the dome pistons. I would like to upgrade to aluminum heads and bigger cam it appears Edelbrock RPM 60189 88cc heads are made for domed pistons. I am old school did not have aluminum heads last time I built motor. Will I be safe with 10.5 cr and pump gas with these heads. I also read that most want quench when building with aluminum heads. I have called several sources head manufactures and the popular sites that sell parts. All are very vague say must buy parts and do mock up. I do not want to spend thousands on parts to find out they are not compatible. Any help would be appreciated. I did several searches on the 60189 Edelbrock heads and cannot find much information, like they are not used compared to the closed chamber heads. Thanks in advance for any help you can provide.