I used Pioneer TS-G1041R 2-Way speakers up front, Pioneer TS-G1641R 2-Way speakers in the rear hatch, and Stinger 300 Hz Bass Blocker Passive Crossovers with the front speakers. I had to mill the back of the front grilles for a bit of clearance. FWIW, I found the front speaker P/Ns by searching the site here.
PIOTSG1041R Pioneer TS-G1041R 2-Way Speaker, PIOTSG1641R Pioneer TS-G1641R 2-Way Speaker, STISBASS1 Stinger 300 Hz Bass Blocker Passive Crossover Component