Earlier 1SG's with HUD will also have ACC and will be loaded with virtually all the options. I think later years may not have HUD & ACC combined. I love my 2006 1SG, but it has AWD that I wanted and you don't.
Make sure to test drive it and exercize all the features. You'd hate to spend $20K+ (or $40K if nearly new) on a car that is only almost what you want.