rake

I am looking into leveling kits and I want to calculate the factory rake on my 1500 to try and estimate the true result I will get out of the kit. Can you offer any tips to get an accurate estimate/result. I am looking into pro comp spacers or possibly bilstein 5100.

I saw a user on here that had a 5 inch lift in the front and nothing in the back on a 2wd like mine. How did he piece together a 5" in the front? What are my options other than a level? In other words what I'm saying is, I want a 5"-6" lift in the front so I can do a 3" lift in the back and...