You do not need to move the seat tracks back.
You need to remove the bottom seat cushion.
Make a note of where and how the big spring is attached to the sliding part of the seat and the fixed part of the car. Now disconnect one end of the big spring.
Remove the 4 screws holding the seat latch to the floor. Slide the latch back so that the 2 screw holes in the front of the latch line up with the rear 2 holes in the body. Put those 2 screws in. Put the other 2 screws in the empty holes where the front of the latch used to be attached.
Reconnect the big spring like you found it.
Put the seat cushion back in and you are done. You now have 4" more room to get in and out when the seat is back.
You partly block the rear doors when you do this, so you may need to get in and slide the seat forward to make it easier for people to get into the back. Then slide the seat back after they are in.
Hope this helps.
