Ok, i have taken everything out of my burban, i now have a 97 explorer to play with. I want to do 2 15's, i guess port them. I will do this in stages, as i learned you guys do it. I will need to get the subs 1st, then another amp. I want to stay under 500.00 for the subs. Then i was thinking giving each sub there own amp, like a GP3000. What are some subs i can go with, new or used. This for SPL. Come on guys take your best shot at this!!!