It’s been over twenty years sinse I was in the engine machine business and not having access to the right equipment I was in for a surprise. After a few phone calls I figured I would look up an old friend at Larry’s Auto Machine. Although maybe not a Nissan performance shop they are more than qualified for all of your machining needs.
This is what they did for me…Bore and hone block, resize rods with new bolts, polish crankshaft and clean, balance rotating assembly…all for 280zx.

http://www.larryspower.com/