Do you know which Infinity Reference 3002 fits because all the ones I see are 4 ohms....Best fit for the Charger for OEM replacement aftermarket is the Infinity Reference 3002 3.5". It is 2 Ohm like the rest of your speakers so there will not be any loss of volume with a 4 Ohm speaker. They have the proper clearance to fit under the stock grill.
They will sound so good it is likely you will be forced to do a whole system upgrade! Sonic Electronix has a good price, Crutchfield will provide you with the adapter hardware you need as well so you net about the same price, maybe a little cheaper. Bought from both and both are good retailers with lots of help.
Infinity calls it "true 4 Ohm" because with most small gauge harness wiring there is more resistance in the line so the amp sees about 4 Ohm. The Infinity speakers are 3 Ohm (My 3032's measured less than three). By comparison, the Kicker OEM upgrades measure 3.7 Ohm. This is from memory, I didn't write down the numbers when I measured. But I can confirm if you like. I have 3002cfx and the stock tweets.Do you know which Infinity Reference 3002 fits because all the ones I see are 4 ohms....