MPL and GPL

Hi,

I would like some clarifications on the usage and distribution of GPL
code under the MPL 2.0 license.
I work on a project that may need to use, modify and redistribute GPL
source code. The FAQ at [1] indicates that this is possible by "creating
a "Larger Work" under the terms of Section 3.3". The project is
currently licensed under MPL 2.0 only. What wording do I need to use
in order to publish this project under both licenses? If there are any
examples you could point me too, that would be great.

Thank you,
Julien Vehent

[1] https://www.mozilla.org/MPL/2.0/FAQ.html#mpl-and-lgpl