Is there any way possible to take a 2 seater 280zx and make it 2by2?

It's possible, but it's going to be a ton of work and probably cost quite a bit of $$$. I believe you'd be looking at some chasis reconstruction on a pretty big level.

- Jeffrey

so I cant jus get some seats, and bolt them in the back?

The 2+2 280zx is longer than the 2 seater, thats how the back seats fit in there... the rear seat in the 2+2 is so small and pointless that I don't know why they added it...

-Grendel

i need some seats jus incase i have one or 2 more gurls riding with me