i have 2 packages here in front of me, one is part number 8199 and the other is 8198
what is the differance? heat range?
on the 8199 it says plug number is 576s resistor
and on 8198 ~~~~~~~~~~~~~~~ 574s resistor
whats the differance and which would work better for me?

im hoping that the 8199's work better for me because i bought the 8198's locally so i can return them but the others came from Summit so return's wont be as easy

my motor is a 74 4 bolt from a vette, with world product S/R Tourkers that are ported/Polished to the max
for the time bieng im only gonna run a carter AFB 650 CFM wit will step up to a 750 CFM before too long, Weiand Stealth intake
the car has sanderson CC90's and 2-1/4 exhaust with 2 cats and 2 mufflers, roller rockers, beefy cam,
and it is all on a fresh rebuild that has never been run

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Rich AIM: ONE FAST 2M8

white-- 86se V6 daily driver
Gold--- 86se 355 SBC

anyone?