As far as oil I use 20w50 Valvoline so that shouldn't be an issue.
And I have thought about going to stock parts but I wanted to make sure the 1.6 ratio is accurate.
I really doubt the stock rocker is a 1.6 ratio but it's reliable and quiet.
What I should have done is go 2 steps bigger am and used the the stock rockers. But now finding Mopar rockers is not easy because the market is flooded with knockoffs.