Junkyard Magnum. Lifter tick?

Thanks, looks like to do a stuff mounted it takes some work. I see alot of people running chevy Rockers (I don't wanna do that). But when I saw pics, I didn't realize they "converted" it. When I saw stock motors apart looked like a shaft like the older LA motors. So thought they just had like aftermarket heads.
I put Harland Sharp 1.7 roller rockers on my 360 magnum in my truck. Just popped the valve covers off and installed slicker than a whistle. Worked with all existing valve train.