My advice: Skip it!
Get a stock ZXT morot and harness and graft it onto your car. Much better drivability and response. Why drive 70's technology, when 80's is just as cheap and gives you more fuel mileage!
That system gave me about 17mpg daily driving in my 240, but I got as low as 5mpg! On the other hand, the stock 280ZXT setup in there now gives 20+mpg easily, and rarely have I been close to single digits (I got 12 once...)
Blowthrough turbo carbs were state of the art back when that system was new, but even then, Haltech was out there, knocking on the door for better fuel control...