Sorry to hear that 😟
Is the computer whose specs you listed the victim or the potential donor? We need to know both models.
In spite of the spill not appearing to have doused the electrics, be prepared to find they are affected now or may fail in the future due to the spill. To that end, put your homeowners'/renters' insurance carrier on notice that there has been a accident. Many people have been pleasantly surprised to find that such damage is covered, subject to the usual deductible.
For many people the deductible is less that the cost of repair, and certainly much less than the cost of a new computer if it turns out the damage is greater than you think.
As that model is now over five years old, Apple may not have parts. You will have to ask at an Apple Store or an Apple Authorized Service Provider. Also ask the Apple Store about the availability of a "depot repair" for that model. Instead of fixing the computer in the Store, they send it to a central refurb facility. Although depot repairs for physical damage instead of parts failure is typically up-charged, a depot repair fixes everything they find wrong for a fixed price that is usually much less than an in-store repair.
The only downside---and it is a small one---is that the depot repair usually takes about a business week plus shipping time.
If Apple does not have parts and you cannot use the assembly from the other MBP, there are plenty of places selling MBP parts. A google search for "macbook pro parts" will give a lot of hits. This one has been around a long time:
http://www.powerbookmedic.com/MacBook-Pro-154-22GHz-Core-2-Duo-m-30.html
I'm assuming yours is a 15.4-inch display
