I've seen a whole bunch of tunnel rams. There too too cool look'n. Do they really "work" at 3/4500rpm? ! Not chopp'n T/Rams, hell I love um'. But they spendy specialy polished, an I gotta have'm polished. BTW, oil and . filters, what kinds do . you guys use? What kinds won't you use? And spark plugs, what to use and does anybody "index" them any more? Is there a need to with new plugs?