So far since i bought the car a year ago i've removed and replaced all the suspension bushings with energy suspensions poly, just about everything else rubber is replaced too.
The car came with the aftermarket intake so I just bought a holley 08007 for it. I have some aftermarket frame rails and subframe connectors on the way I'll post some pictures of them installed soon

The engine that came w/ the car is a 2.8 liter n42 block and head from the early 280z, I guess the previous owner didn't like the fuel injection. One of the next things i plan on fixing, the new holley works fine for now. Its all pretty stock right now, but that will change.
some pics of my frame rails from Bad Dog Parts they're made of thicker gage steel and weld over the original
This is one of the rear pieces originally 240z didn't have much support in the rear it might be a little heavier in the end, but much more rigid.