I have the 300 ZX Turbo (automatic) that needs new front struts. I could get the Nissan brand for 1,400 which doesn't include labor, or I could get the lifetime warranty gas replacements for 95 buckolas plus labor. Is this a no brainer? The shop asked if I changed the air ride.....it's on smooth all the time, so they said it wouldn't make a difference in the performance or the ride. Whaddya think??