I'm going to look for a 89
cause i'm tall
do 89 have some airbags?
i want saftey car aswell :O
LX is lighter then a GT right?
No. Airbags didn't get installed until 1990-up. This is when tilt steering went away for the Fox bodies. [tilt steering returned in the SN95 Mustangs, '94-up].
I had an '89 GT before I got the '90 GT. --just from a personal opinion stand-point, '87-'89 Mustang front seat head rests are big and ugly compared to '90-'93. Obviously, seats can be swapped between year models. Not only are the '87-'89 headrests big and ugly, they also limit your ability to see out from inside the car.
Also, early 1990 model GTs [like mine] don't come with arm rests on the center console. later in the '90 model year, Ford began reinstalling them. I thought I would miss the armrest when I got the '90 GT, but I discovered that I no longer banged my elbow into it during 'spirited' shifting. --Look at most any Fox Mustang console and it's likely the latch on the lid is broken, and this is the most likely reason why.
Coupes or LX hatchbacks being lighter than the GT body doesn't really mean anything unless you are racing for a living or unless you just want a slight edge as an amateur bracket racer. I suspect your plans for the Fox would be primarily for steet use, and little to possibly no use on the track. I think the coupes and LXs are ok looking but not as good looking as the GT body, or especially the Cobra's body trim, but this is just my opinion. --When it gets down to it, get what appeals to you and not someone else.
My '90 GT was my daily driver from 1998-2003, when I bought the next Mustang that has been my daily driver since bought new in '03 --my Azure Blue '03 Mach 1. As fun as the Fox GT is, the Mach 1 will out run, out stop and out handle circles around my '90 GT.
My '03 Mach 1:
The shaker scoop isn't just for looks. It actually funnels cold air to the engine. ;-)
Video link below of me running my [factory-stock] Mach 1 against a '98 Cobra on a 1000' strip in western Arkansas. At the time, my Mach had just rolled over 100,000 miles. --got a warning for running too fast with no helmet [whoops!]