If it is the factory gasket, re-use it. If it is an aftermarket gasket, go to Ford and buy a factory gasket. The factory one is metal with the rubber bonded to it, and can be re-used many times and still not leak. The aftermarket ones are just the flexible rubber, and it will eventually start leaking even on the first use, and if you over-tighten the pan with the aftermarket gasket, you can warp the pan, which will also cause leaks.
This info is very valuable. Thanks everyone. I bought my '95 bird in 2006 with about 85,000 miles on it. It was owned by a Ford salesman who needed a van, and didn't care about profit, he just wanted a quick turn. I happily paid $2300. Anyway, he assured me, and I had a good feeling, the car always had good service at the dealership where it was traded in by the original owner, a retired school teacher who bought the car at Harbor Ford in Costa Mesa Ca. Maybe why there is no traction lock, or anti-lock brakes.
At 120,000 miles I had a flush done, but I don't know if the filter was changed. Now at 165,000, it must be done. I'm thinking I can do this myself, but at age 73, I don't feel like putting so much effort into a job like this. Therefore, after ruling out having the job done at a transmission shop, an auto shop, or Jiffy Lube, I'm going to gather the materials and my friends at American Iron, in Eagle Point, where I have my exhaust work done, and who I really trust, will do the work.
Even though I have the factory service manual, I've already learned things here which contradict it. It is in there I read to use a new gasket.
Even though I am 73, I want to own my car until the day I die, and I plan on living into my 100's. Therefore, when the time comes, I will have a rebuild with a J-mod done.