ready lift 2.5 inch leveling kit

[06lariat4x4]

i have an 06 f350 and just installed a readylift 2.5 inch leveling kit and noticed that there is a one inch block on top of the large factory block on the rear axle. did this come from the factory like this or did the previous owner put this in? my question is will a 2 inch block on top of factory give me a one inch rake? ready lift says i can fit 37's and i found a killer deal on some toyo open country m/t's 37's. will i have any issues with these tires rubbing? i have jesse james rims but dont know the back spacing.. how can i figure that out??

thanks for all your help!

mitch

[Ottsville77]

I'm also running a ready lift leveler on my 06 and I know ready lift says you can fit a 37" tire on that kit. However, I wouldn't, I heard of guys who run 35's who have rubbing issues. That is a lot of tire to squeeze in that well at that height. The offset is key though. I received a chart with my kit listing the proper offsets for each tire size. Cant find it or I would give you the numbers. I know there are many informative people on here who I'm sure will chime in. If not just call ready lift and they will be able to tell you.