Question on rear storage compartment speakers

[pelsteve1]

So I have an 01 Boxster with rear storage unit speakers. I managed to damage one of the cones of one of the four 98664550300 speakers, which seems to indicate it is 6 ohms. And unfortunately, ripped off the connector lead and unable to solder it back as well....so time for at least a replacement.

It looks like I have an Orion 5004 powering a Kenwood KSC-SW10 sub and a Pioneer F700BT player install prior to my time but can't really tell the exact details of the wiring.

According to the amp manual, the amp can put out 80 watts at 4 Ohm, 125 watts at 2 Ohms.

According to the player manual for the player
Maximum power output ....... 50W × 4 50W × 2 ch/4W + 70W× 1 ch/2W (for subwoofer)
Continuous power output ... 22W × 4 (50 Hz to 15 kHz, 5%THD, 4W LOAD, Both Channels Driven)
Load impedance ...................... 4W (4W to 8W [2W for 1 ch] allowable)


so a few questions:
a) Are the two speakers on EACH side of the storage compartment in series or parallel?
b) What impedance speakers can I get away with in this config?
c) Any suggestions as to specific make/models that would work here?