I would search for a 280zxlet to start with. Got mine for 1K with shipping. But it`s made for this with the cam,the better head, sensors, manifold,etc. The Holsets, which can bolt up to the exhaust manifold..with a 7/16 drill out are available used on EBAY for an reasonable price.I got Mine for 335$ w/shipping. Then go to DIY and get a Megasquirt ll..and the other stuff you`ll need...relay board,stimulator, connecting cords,and go to RS motorsports for the harness. If You want to go wideband o2 go to Modern Automotive Performance. You can make it work with what You`ve got..but this seems easier to Me. I`ve got a 76 280z 2+2. Have Fun, Roger