Post what type of enclosure you're thinking of using and how much space you're willing to give up for the enclosure. Type of music you listen to also.That'll help people point you in the right direction. Also since you'll be using a dsp I'd consider raw drivers from places like
parts express or madisound. You'll want to invest in sound deadening for your doors or it'll be all for not.
Idk what your budget is like but I'd consider adding a monoblock amplifier and doing a 3 way in the front or 2 way and rear fill. That will give you more options on subs too.Probably happen anyway once you get the bug.