yeah yesterday when i got in my jeep it said -1 degree lol so that might be out lol ... so i guess magnuson will be the way to go... now to get a fresh motor or not lol and since I'm new i do apologize but i thought i read some where on the forum that someone has 37s and is running 4.56 with a charger does anyone know if they were happy with that setup or were they going 4.88 ( i have a manual )