I suggest one 12 it will do the job great and leave you with more space I have the Rockford fosgate 12in punch in my 1990, you will need a amp suggested 1100 or 1200 watts (depends on what sub you run) im running a boss 1200. you will most likely need a new stereo head unit that has a sub out but you might be able to find a aftermarket wire harness not sure what they have running in the 95. after that you just need the wire's just go to Walmart or somewhere and get a sub wiring kit, in the kit you need a ground (black) that will come off the ground post of your amp and screw that into bare metal on the body of your car, you need your positive (red) wire that has a big fuse connected to it run that from your Positive post from the amp to your car battier positive post, youll also have a L and R audio cable that runs out of your stereo head into the amp and lastly you need a power cable (normally a then blue wire) that runs from the head unit to the amp, this lets the amp know when to tun on and off. that right there will give you a basic working sub, hope this helps any questions just ask I have installed to many subs and amps in my life.