I have a 2005 Ford F150, with 35% tint on the front, and the stock I have heard around 18% on the rear. I was going to get 20% on top of the front 35% and then 35% on top of the rear, and equal out dark, but one of my buddies told me that would be darker than 5% on the front, but to just take the 35% off the front windows and put 5% and then just add 35% on the rear and be around 5% all around, What do you think? Any help is great, thanks!