that depends on what overall combination he is running. for instance if he wants good top end speed, but needs dig off the line, a low first gear combined with a moderate final drive ratio will put the par where he wants it. as for you suggestion that a wide ratio gear set can hurt if you have a tight converter, thats rubbish. the converter is what is holding back the engine, not the gear set. a tight converter doesnt allow the engine to rev quickly into its power band like a looser converter does.