Hellcat forums are full of hemi tick threads and they all have hellcat pumps, obviously. I had hemi tick, been cured over a decade, no wrench turned. Change the oil characteristics instead if the oils flow. Nearly 100 rams from this board have done the same. But, it seams like you are doing a major rebuild, so why not do your thing and see if you have tick, if so look up the hemi tick threads. And whether or not if a hellcat pump would or wouldn't help, I'd say why not use it, why not use it over oem if you are building your engine up?