New transit tests

Hi everyone.

This is my first post here in Nanog.
First of all, sorry my bad english -- I'm Brazilian.

We are activating a new transit connection with 40 Mbps and I need to test
it, but here in Brazil all the international transits are weak.
I'm looking for a server that I can download/upload with full speed at New
York or Miami, places that this transit have presence in some NAP/IXP
Can be one url with a file of 1GB 'dd' generated file, but the server need
to have this bandwidth avaliable.

Someone can help me ?

Thanks in advance.