I've been researching frame z-ing as i'm about to start my frist frame modification ever. It's a 30 model a tudor if it matters. My question is, when z-ing a frame, you obviously lose overall length, right? isn't this important? Unless i understand this completely wrong, you cut at a 45 degree angle, and flip the piece of metal to raise/lower the section in front or behind the cuts. How does the length you lost not matter or are people adding more metal in to make up for it?