our workhorse right now is sohc 12 valve 2.8 liter single turbo(180bhp) the skyline is dohc 24 valve CROSSFLOW HEAD twin turbo 2.6 liter.now here is the fun part everyone thinks that the skyline engine has a base hp of 280.well in japan if a car is listed as having hp more than 280 it will recieve a sports car tax because it creates a good amount of hp. the skyline acually makes somewhere between 305 to 330hp.that would make an '83 280zx a mid 12 second car and the motor is completely stock.i ve seen this motor make 450 to700hp inDAILY DRIVEN cars and up to 1100hp in race cars so the posibilities are endless!! they should re-release the 280zx turbo with the rb26dett engine. i don't have much money but your smokin' crack if you didn't buy one! billy mattull(tampa,fl)