Aluminum case for apm 2.5

I wanted to install the apm 2.5 in a aluminum shell.Will this work? I know the gps/compass has to be in open sky.
Thanks for answering the question.

@servoman1,
Putting the GPS in an aluminum case will significantly reduce the satellite signals that the GPS will be able to receive. I do not recommend putting it in the Al case with the APM.
Regards,
TCIII GM