is there any way or is there any adapter out there to mount a 6x9 in the front or would i have to modifty the door?

if its not made for 6x9 why put them up front???? if it fits 6 1/2 put that instead

but if you really want 6x9 well you will have to modify it

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02 GRAND CARAVAN SPORT

SPEAKERS: -6 1/2" component from energy still to come concidering alternatives
-2x Massive audio CW12 in 4.2cf dual chamber square ported at ~35hz

Amps: -DD SS1
-KAC-745

Upgrades: -160 amp alt. maybe
-4 gauge wiring (done)
-0 gauge BIG 3 (done)
-sound deadning the shit out of the van somewhat not done yet
?????????

You have to modify the door, the most you will fit in the stock location with brackets is 5.5 inch.

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L0W T0N3Z AUDIO

I modified my 97 to fit very deep 6.5's and tweeter higher in the door.

A good jigsaw with a course metal blade works wonders. Then i made the spacers with layers of plywood, lots of glue and cut the door panel to match.
Sound deadener and some wetherspripping to seal and you're good to go.

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Alpine CDA-9887, TUA-T500HD, CHA-S634, CHA-1204 & KCA-410C
Pioneer TS-A6981, 6 x GM-5100T
Kicker 2 x CVR15,
MBQ RCE-216
PG MX2
Soundgate LanStar1
PAC SWI-ALP