Yes indeed 44014 I'm not sure how many people are aware of this and I only had this discussion with a 240Z owner from this forum a few weeks back on here after they kept questioning me. The 240's weight is 1070kg allowing for maximum of a 4.28 ltr engine, so not sure how there putting LS1 engines in them, but good luck if they can get around it but I'm not sure where they would stand if push comes to shove.
A 260Z 2+2 has a weight of 1220kg allowing for a maximum of a 6.1 ltr engine by the following.
In section 2.13.1 vehicle mass, of the vehicle standards bulletin 14 national code practice it states the following.
The mass of the vehicle is the original tare mass of the model vehicle fitted with the largest engine available for that model in Australia but without optional accessories. The mass of the vehicle, weather its ( here is where its interesting ) a sedan, station wagon, utility, etc should be based on the heaviest sedan version of that model (not station wagon version ) sold in Australia.
So the heviest sedan version or any version of a 260z is 1220kg being the 260z 2+2.
Lol this should start some debate lol