I just swapped in an NP205 into my 70 K5 - the prior owner said it had a Dana 20. I have all new rubber body mounts and I am using polyurethane transfer case mounts, the onese that are used to attach the adapter to the crossmember. The NP205 is just barely touching the bottom of the K5's floor. I have not been able to torque down the bolts going through the crossmember to the adapter but I doubt that will pull the NP205 down much. I need to move the crossmember back approximately 3/8" to make it so I can bolt the adapter to the crossmember. What kind of clearance do you all have between your floor and your transfer case?