What model G70 and Stinger are you looking at? That can make a HUGE difference in performance.
Definitely get the AWD if you want to go fast. It weighs more but it is SO much more reliable for traction. Trust me I have RWD and I regret it. I almost put it in the wall at the track because it was spinning the tires so much. The AWD guys never have any issues with traction at the track.
If you can do without the sunroof, better stereo, driver aides, heads up display...etc then get the base model V6 for either car. They are much faster then the top trims.
I have run as fast as a 4.37 second 0-60 mph and a 12.62 1/4 mile at 111+ mph just by simply swapping out the snorkels. That is without a tune. You can’t swap out the snorkels as easily with the G70 so I doubt it would be as fast as mine unless it was tuned and had other mods.
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