I believe this to be a typical r180 to r200 swap with all the other things included ( r200, r200 half shafts, the lower rear "curved" bar, and flipping my r180 mustache bar or getting one from a 280) my question is that while lurking through the boneyard I noticed that 280ZX's don't have mustache bars, can the diff still be used with the typical mustache set-up or is there some moddin' involved?

I believe that you have to get a R200 mustache bar from a 280Z to do this.

Yes, you need a mustache bar out of a 78 280Z. No modifications are required. There used to be a step by step write up on ZCar.com. Also I'm not sure about the half shafts. I compared the ones on my 73 to the shafts I got off a 81 and they appeared identical.

So the mustache bar out of a 78 280 will bolt up to the ZX diff no problem? It looks like that without the mustache bar on the ZX that they extended the 2 studs to fit that ZX rear mount.

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