Wanted: Trustworthy Person in Buenos Aires

[esse]

Dear Travellers -

Me and my girlfriend we would like to tour South America with the Motorcycle, starting in december. Since shipping the bikes is too expensive, we will disassemble them und ship the heavy parts (engine,...) with a friend of mine, who is shipping his truck to Buenos Aires in May anyway. We will then just take the frames and the wheels of the bikes with us, when we fly there in december - hoping, that argentinian customs will mark the frames as a "motorcycles" in our passport, when we enter. Now the question is, where can we have stored the box with the heavy parts of the bikes, which comes with the truck in May? Does anybode know a trustworthy person in Buenos Aires, who would be willing to store the things in his home until december?
I would be very happy about an answer!

tim