Junkyard Magnum. Lifter tick?

Just got the Magnum swap done. 750 carb, headers, new timing chain. Motor had like 160k. Runs great. no smoke. idles at 30psi oil pressure jumps to 50-60 with a good amount of throttle. Been beating on it quite a bit. (I put it together to enjoy it and I do!) Lol, anyways, def gets reved. nothing to crazy. maybe seen a bit above 5k a few times. Had a SLIGHT tick before now, it's noticable. Debating if I should tear it apart or just run it. Sounds like driver side VC...just a tick. Opinions?

Also, if I do replace them, thought about putting on 1.7 rr's, but would that be a bad idea with the old springs?