Autolite 63?

My most recent purchase came with 318 with 302 heads, Comp 260 cam, stock manifolds, and TTI exhaust, which came installed with Autolite 63 plugs. 43k original miles on motor. The motor does use a little oil. Would it be okay to continue using the same plug number? Maybe a colder plug was used by the previous owner to ward off any detonation risks if a little oil is being burned.