If you want efficient, then run a low dwell. Set it about 9ms and you should be good. You may need to readjust your regs though.
ETEK 3LT, with 14" Ti boomstick and cure 3 + bolt F/S
Vanguard creed eyes, membrane, bolt pin, detents F/s[/color]
Old school angel poppets/cup seals, spring detents(not sure which models) F/S