Your MegaCab is 78" with or w/out the lift and tires? I though they were about 78" tall stock?
The specs on my 11 ram sport 4x4 are 76.3" tall. So if i add the 4" lift with 35's then i'm assuming i will be adding about 5.5" to the height of the truck.
I just don't want to get it all done up and then not be able to put it in my garage!