I must admit I have removed the complete interior to clean everything and replace the top dash piece. I also insulated everything under the dash, floor and back wall. I will be removing the engine for a rebuild and performance upgrades as well as replacing the nv4500 with an ATS nv4500. I believe once the engine is out and removing the interior again, it would be just a little more to lift the cab to get at the frame. I just need to be able to see everything easily to clean and check for rust. I will be giving the frame the POR15 treatment. I am new to this kind of a project. I had never removed a dash or messed with wiring harnesses or anything like that before, but took a Haynes manual and removed my complete dash and interior in my apartment complex. My wife was not happy, as I had all the ac/heat ducts, panels, dash, door knobs, etc. all over the house.