There alot of mixed reviews on the 160 and 180 T stat,ill let someone else chime in on that.But for a 3.4 you should be ok with a PCM, downpipe,CAI,colder plugs and run the highest octane gas u can get up there in Canada.After u get these mods,you should have it scanned for KR,just to make sure ur safe.I hope im not leaving anything out.If i am,someone jump in and help out.