Tough decision to sell or not to sell.

I have sort of a strange question and feel only real mustang owners can properly advise me as to what I should do, so here it is. I have 2 commuter cars that me and my wife use to get to and from work and whatever else. I also have a 88GT Mustang that I really enjoy having and plan on performing mods on it as I can. I don’t exactly have room for 3 cars and have been thinking about selling a car. It has been a toss up between one of our commuter cars and the stang. My Mustang has about 120K on it right now and runs well and I am willing to spend money on it to keep it running as time takes its toll on it. With the amount of mileage on the car is it recommendable to sell my commuter car and use the stang as an everyday driver? What sort of confidence can I have towards an 88GT?

Thanks in advance.

That was the direction I was leaning, but not being very familiar with the small block 302 and mustangs in general wasn't sure if 120K was a lot for the block. I think that has sealed the deal.

Thanks for the help guys.

Keep posting though guys the more opnions the better.