Basically, it's illegal to import or export cars into Uruguay. There are about 25 duties and customs fees, and the average car is about 20 years old. That means owning a 40 year old car is commonplace.
Old automobiles never die in car-conserving Uruguay
Check out the want ad listings, cars are for sale that would entice restorers to risk jail time.
So, the OP is looking for a little help because 1) there's no way anyone there can pay the duties and import customs fees, 2) he has no choice but use what is available from salvage.
What would it be like if you could only build your kit from what you scrounged lurking around a salvage yard?
Stop showing your ignorance and supersized American attitude, the OP would appreciate some help. How hard was it to google "Cars in Uruguay" and get some sense?
Note to OP: sorry, but we have no clue about the situation there. It's one of the liabilities of freedom, we pretty much can do what we please with cars here, and ignorantly assume everyone else in the world can, too.
That is obviously not the case for you.