Had a 528 cu in made 844hp at 7200 684 tq at 5600 13.5 to 1 741 lift cam with tunnel ram 2 1000 cfm carbs 440-1 heads. New motor 572 cu in 877 hp at 7200 738 tq at 5500 14.5 to 1 693 lift cam same heads and intake set up
Got mine from napa years ago for dodge truck, lifetime warranty. Have replaced it several times over the years. 528 cu in 14.0 compression turns over no problem.
Back in the 80's on my 74 duster I put longer bumpers on the a-arms so they hit before the pan hit the ground. Problem solved. That way you can run any pan you want to. Didn't have the pan choices back then you do now. Good luck with the build.
There's a company on racing junk [under mopar engine parts] selling billet timing covers for $300.00 ask for Josh. I've seen their part and it looks awesome. You might want to check it out and save $50.00. Tell Josh, Tom sent you.