I've had a set of modified (screw in studs,guide plates, 2.02/1.6 valves roller rockers) sbc 441 heads sitting in my garage for a couple years (they worked fine before I set them aside). The car I'm want to put them on is my 76 Chevelle which I generally use to run to the store/daily driver kind of thing. They literally have some dust on them. Is there anything I should with them before I install them other than a quick clean?