Ummm, actually the 'Fairlady Z' is a Nissan term for the JDM 350z.

 

The JDM Skyline GTR and Supra both have similar power and torque as stock. The 2JZ-GTE found in the turbo Supra is very easy to tune, with around 400bhp and 350 ib/ft available from the engine with fairly simple modifications.

 

Depends what you want. The Supra is GT cruiser with loads of torque (in a properly tuned car - see Bootlogic's / Ryan Woon's 8 second 1/4 mile car!) and is great for blasting the motorways. The Skyline is lighter, and with the variable torque 4WD on the GTR is an ideal weapon for the twisty back roads!

 

I miss my Supra, I had to sell it when I moved over here Cry