I wanna see a picture of what a 04-08 Ford F-150 looks like with 275/70r18
thanks

 

This was the set of 275/70r18 BFG KOs I had. Good tires but I always thought they looked small. My best friend has the same truck and tires and he has no leveling kit and I always thought his looked better for not having so much room in the front wheel well. Honestly, if you are dead set on the 275/70 tires I would get them without a leveling kit and make that decision if you want to level it or not because you don't really need it and leveling kits just end up causing you problems in the long run. Anyone who says they don't is either lying or in denial and is ignoring their worn out front end parts. Leveling kits are a cheap way to raise a truck and they put your ball joints and other front ends parts like CV axles at an unnatural angle, which leads to them wearing out faster.
Final thought - look into the 285/65 r18. These look really good on a stock f150.