NGK ZFR6FIX-11 Irridiums they're warmer plugs than either of the autolites but cooler than the ones i had in it
figured i'd try a 2nd different set of NGK's before I tried regular autolite plats
still a very tiny bit of noise, but the noise seems to be going away the more i drive it
i think the noise was a combo of the coils getting weak, and difference in the autolite double plats and the xp irids versus the ngk irid's shielding
i'm an autolite guy, always have been, but in practice i use what works for me and it's not always what works for everyone else
stumbling/hesistation at 4000 & 4500 = eliminated
before i say i found my plugs for good for this one, i'll say i'll be doing another one of those 10K mi runs on them, i simply couldn't bear to do a 10K mi test with the autolites that i had picked out if anyone wants those double plats for whatever reason i'll bubble wrap them and mail them to you
the autolite xp irids are apparently worthless for our 3.7's, i have heard however that they're quite nice if you have a msd or accell set but after just a few hundred miles, they looked like they'ed been in there 30K just don't have the electrical-balls to push them i suppose