So, IF I just happened to find one of these, for say...less than 500 USD. I should pick it up???

"2005 Infiniti FX35 all-wheel-drive (AWD) with Sport and Touring packages. Original owner, nonsmoker, no pets, no accidents. Pristine condition, always garaged at home and work. VQ35 3.5L V6 at 280 HP with Vehicle Dynamic Control, Traction Control System, and ABS. Snow mode switch."
Maybe swap in the AWD while it's there!
Come on, that engine alone is going to be 3-5K from a wreckers, right?