Adding stroke is not really making ungodly changes as far as the need for oil system upgrade goes.
Stock stroke will take more boost to achieve power levels.
Stroker will make power with less boost than the stock stroke.
This is everything setup the same execpt the stroke.
Oiling system modded as normal will suffice either application. Now if you have money coming out your ears then go ahead and put a modded system on either setup.
I say if u dont have to have it, no need. Money saved for slicks, track fees, regular tune ups, etc.
Boils down to how far you are pushing it folks run in the low tens ALL day with the stock setup. ANd there is some in the 9's.