With the engine bolted in, we heaved the NV3550 into place. We did remove the shifter tower for floor clearance, but it unbolts easily and uses a nice rubber O-ring gasket that requires no sealant. Note the great shifter positioning. Our rebuilt transmission that Advance Adapters supplied is out of a Liberty and the shifter cane is angled back farther than the shifter on a TJ or XJ tranny. The angle works, but had it not we were planning on replacing the factory shifter with a short-throw B&M or Hurst shifter.