I have a 93 with a single 60 trim turbo and I am adding methenol injection this weekend and I was wondering what heat range plugs I should use. I am adding a twin power as soon as it gets shipped to me. If it matters , next weekend I am having the car tuned for 15 lbs or so w/o meth and 25lbs or so on meth. So someone please give me some advice please.