I love mine lots, but for my current DD uses its just not practical, with hauling kids and DC area traffic (it's a manual).. Ugh!
I'm really lucky that I can't remember when my stang has let me down or stranded me anywhere. But not being a DD, that really just might be luck. My main knock against a fox body though as a DD is it's handling in poor weather. I don't know if I just haven't found the right tire combination or what? But my 'stang is literally deadly in the wet! It's back end will spin out or slip away at the drop of a hat, and that's with just stock power, me being careful with it, and having a heavy toolbox permanently in my truck to add extra weight back there. For that reason alone I wouldn't use it as a DD. I'm just not wanting to die just yet!
One thought I have considered at times, however, was merely related to the cost of new cars. At $25k+ to buy a 1/2 decent new car, for spending significantly less than that I feel pretty confident in replacing enough parts to turn my fox into a reliable DD. One with some 'tude! Here in VA, also, we pay less tax overall, but instead pay property tax on our vehicles. Having a 20+ yr old 'stang is a good way to pay almost no property tax. Maybe when I get rid of the rugrat (any takers..), retire and move someplace a little drier I will use it as my DD. Like I said above, for a fraction of the cost of a new car I would expect to be able to get it in tip top, totally reliable shape.. And it will still turn heads..