What does it take to put the R200 differential in a '70-71 240Z? Because the '72 and later Z cars moved the differential rearward about 1 3/8 inches, using the R200 in an '70 and '71 Z car requires some special consideration. BTW, this was a design change implemented by Nissan in 1972 to reduce the halfshaft angle and thus reduce vibration and U-joint wear. You will need: 1. The '72-'78 U-shaped rear suspension crossmember. This has a "curve" or bend in it to clear the larger R200 differential housing and also because you are actually moving the diff back a little. 2. A '72-'78 driveshaft. This is about 25mm longer in length. Note: the '72-'74 driveshaft have replaceable U-joints, nice for maintenance. 3. The R200 "moustache bar". This supports the rear of the differential. The R200 bar has a curve in it and it is drilled for the wider mounting bolt pattern of the R200. 4. The R200 front rubber differential mount. You can get everything off of 280Z that had an R200, stub axles will bolt up OK, even though the R200 is slightly wider than your old R180. Now, you will find out that the diff strap now comes directly over the R200 front rubber mount bolts. Since the nuts are on top, there's now not enough slack in the strap to bolt up. The later Z cars moved the four bolts for the diff strap rearward. So, you can remove the strap and use several turns of 3/16 inch steel cable threaded between the front rubber mount and the diff and then wrapped around the front diff crossmember to secure the diff. However, I recall talking to someone who used the 280Z diff strap, and reversed the direction of the front rubber mount bolts so that the slim bolt head was on top and nuts on the bottom. This gave him enough "slack" in the strap. Replacing