I would recommend contacting brandon haney. He is a pinball restorer here on pinside (his handle is Big70). He will have to ship to you, but his quality is so high and his prices reasonable....it would be worth it. You know it will be high quality and fair priced. He has 2 high speed machines amongst several others.

I would highly recommend reaching out to him.

Does he have any pins you want to go after?

Have you made a purchase yet, or gone to look at any?

I am going to second what wayout440 has stated.
I will also recommend asking if their is a playfield protector on it or if it has been clear coated. These system 11 machines didnt have really any llayfield protection, and they can easily get worn down. Look very closely around "highly-trafficked" areas for wear. If it doesnt already have one, i would highly recommend getting a playfield protector.

Mylar wears down and will bubble, crack, and wear because it has basically NO protection.

Thats great that is has a playfield protector. It will be a HUGE help.

The playfield protector is a very thin and hard plastic that keeps the playfield from taking damage and being worn down. They often make the game play faster as well. They are NOT easily replaceable. You would gave to remove most (if not ALL) playfield ramps, bumpers, lights, toys, etc. Then you would have to clean the playfield, place the new protector on, and replace all playfield items. If you are very mechanically inclined and have all the tools, it will be apptix 4-5 hours time. Restorers charge a mint to do it.

The playfield protectors cost around $115.

Just curious, but why would you want to replace it already?