2003 Boxster S Aftermarket Nav?Sat Upgrade

[Balloonmeister]

I have a, new to me, 2003 Boxster S with the Bose system. Given that it is a 2003 MY car, it also has the MOST wiring system. I am looking to replace the single DIN unit in the car with a Double Din unit that has SAT, NAV, and Apple Car Play. I have done searches on here, Crutchfield and CAI and can't seem to find something that would work in my car. I am willing to replace the amp if necessary. Anyone else have experience in doing this upgrade?

Also, for those of you who may have installed a SAT radio antenna under the plastic cowling forward of the windshield, have you had problems in SAT radio reception with that location?