A320 FLT CREW LANDS WITHOUT CLRNC AT DTW.

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ON ARR INTO DTW METRO OUR APCH WAS UNSTABLE AND WE LANDED WITH THE ENGS NOT SPOOLED UP. ALSO WE ARE NOT SURE IF WE HAD LNDG CLRNC FROM DTW TWR. THE CAPT WAS FLYING AND I WAS PERFORMING THE PNF DUTIES. DTW APCH CLRED US FOR ILS RWY 22R AT DTW; AND TO KEEP THE SPD UP. WE INTERCEPTED THE GS AT A SPD THAT WAS TOO FAST TO EXTEND OUR FLAPS. WE FLEW LEVEL; TO SLOW DOWN AND CONFIGURE THE FLAPS FOR LNDG. WE THEN DSNDED TO CAPTURE THE GS. AT APPROX 1500 FT AGL IT WAS OBVIOUS THE APCH WAS NOT GOING TO BE STABLE. I ASKED THE CAPT IF HE WANTED A 360 DEG TURN TO LOSE ALT AND AIRSPD. THE CAPT SAID 'HE COULD MAKE IT.' WE PROCEEDED TO LAND WITHOUT PROBS. DURING ALL THE CONFUSION; I AM NOT SURE IF I CONTACTED TWR FOR LNDG CLRNC. CORRECTIVE ACTIONS: AS THE PNF I SHOULD HAVE BEEN MORE FORCEFUL AND REQUESTED THE CAPT TO GO AROUND. CONTRIBUTING FACTORS: THE CAPT WAS NEW TO THE AIRPLANE; LESS THAN 300 HRS. DTW RWY 22R HAD AN APPROX 5 KT TAILWIND. THERE WAS A HIGHER TAILWIND AT 2000 FT. WE WERE BOTH TIRED; THE SHOW TIME FOR THE TRIP WAS XC00 AM REQUIRING US TO WAKE UP AT XA00 AM.