I saw the ad, looks a little well used, there is an aluminum plate on the transom, that is a sign of the transom will need replacing, though I used one for several years with a weak transom, and a plate and it never cracked or anything over 3 years of rough use.
The motor may or may not be worth a crud, never a fan of the older Force. Not a bad deal if the floors solid, if the floor is soft, could be a very pricy or time consuming resto job. Materials, supplies, new electronics, and a possible motor, think of what it would cost to do and double it, or just use it as she is and enjoy
Ask if you could run a compression check on the motor and do so they should be within 10% of eachother. Check for any big cracks in the transom and or bounce on the lower unit and look for excessive flex. Will they let you rtun it?