I've found a 1970 L48 that I'm going to put in my Nova. No, not a #'s match but it is a 300H.P. out of a 1970 Chevelle. It needs a rebuild & so I was considering a roller cam system to deal with the oil changes & better grinds. I wanted to keep the looks & h.p. as close to original as possible. It'll be bored .030. The motor has all the original, with dates on all the bearings, etc.. It was very cool taking it apart & seeing it all in it's original state. Anyway, I thinking of changing to a roller cam to bring it into the modern era but wanted to keep the original outside appearance. Possible? Suggestions? If no to the roller cam, could I please have suggestions on today's oils to use & what to consider when it comes to the modern fuels. Thanks. Time is urgent for I have the motor at the machine shop now.