You have to drop the fuel tank which is in the back of the car. You can tell what it is because it has a black cover over it. The cover has 4-6 bolts that need to be taken out to drop it. Then the tank itself has about 4 bolts. Drop the tank and if i remember correctly, the pump is inside the tank but you can see it from the top becasue it has 4 or 5 hoses connected to it. Disconnect the hoses and switch out the pump, and assemble. Only takes a lot of time because the bolts for the cover and tank are hard to break loose.
Step one would be to go purchase a Chilton book for a 1988 mustang, best 18 bucks you will ever spend.
You have to drop the fuel tank which is in the back of the car. You can tell what it is because it has a black cover over it. The cover has 4-6 bolts that need to be taken out to drop it. Then the tank itself has about 4 bolts. Drop the tank and if i remember correctly, the pump is inside the tank but you can see it from the top becasue it has 4 or 5 hoses connected to it. Disconnect the hoses and switch out the pump, and assemble. Only takes a lot of time because the bolts for the cover and tank are hard to break loose.