just so everyone knows , i have run autolites, alot!!
i have run ngk alot!! on gas as well as alcohol having said that,
1 plug will not outperform the other , ,
in my case and in the cars i have run.
as for the o p in this ,
if he is running pump gas 89-92 oct- 8-9 range plug (med )
of any varity will work just fine in street application/ strip
good coil, cap/rotor, wires are a wise investment !
the right size carb, adjusted correctly, properly tuned ,
and timed will leed to alot of enjoyment at the track and on the road,