Someone posted earlier about what ramps to get for the Z. I looked at a couple places and they would scrape even with an extention. I went to home depot and bought a piece of wood (about 20' long) and cut it at 45 degree angles to make it easier to drive over. The pieces of wood are 9" wide 2" tall and lengths from bottom to top are 32", 23", 14.5". Its just a rough example of sopmething that works...I gets the Z 6" in the air making it easy to get a jack underneath. I also used the rest of the wood to slide under my jack to extend it another 4" (really helps if you don't have an expensive jack). Hope this helps someone.