When i go looking for a new car i get something that i know i can fit nice sound in (im a music enthusiasts) I don't know about yall but i just so happen to pick out my amp before i get my subs. I would recommend getting the best amp in your price range first before getting your subs, but thats just the way i do it. If you can possibly get the subs and the amp at the same time (more logical and probably best way)