Assuming you have the correct installed height/spring choice and cut down the top of guides, the stock heads will make .550". The EQ heads will do .575" OOTB assuming you have the correct spring set. Our stage II spring, lock and retainer kit does not require machine work on either Mag or EQ heads and will work to .575". Our cams have a unique grind in that we dont typically do split lift/duration cams due to Mopars having such good exhaust flow. We have worked with Racer Brown for the last year getting the numbers right on the cams we wanted to offer. Our lift is typically taller compared to duration than most cams. We also use an "agressive lobe curve". Our theory and Racer Browns is to get the valve to max lift as quickly as possible then closed as quick as possible. Our stage II is [email protected], .525" lift 114 LSA for FI or 110 for carb. Our stage III is [email protected] and .535" lift.
Stock heads, stage II cam, AG intake and carb should net 325hp, possibly 350. With EQ heads I would be surprised if it didnt make 375-400. There is an article in CC mag coming out soon that Brian at IMM? did with similar set up. I dont know what cam #'s were but it made 450/450.
The same should remain true for FI if you bump up TB to 800cfm and reflash pcm.