[transamkid]

well since only my door speakers in my v6 worked, my gf got me some pioneer 6x9's for x-mas to go in the trunk. well today to add to those i picked up a set of alpine components spr-17s type r speakers. they were like 270 when it was all said and done. but since i already have the same speakers in the doors and these are an upgrade do i need to use the crossovers they gave me. and after these, im want to put some subs in. but if i do that do i need to get a new headunit? currently i have a monsoon head unit from a '00 t/a.