Hello there, Arthur here in Indianapolis. I have a 2000 Sebring Convertible with an Arc audio system consisting of two 10d2 subs powered by a ks300.2 amp. For door speakers I have Memphis audio 6x9's and a Pioneer cd player. My next upgrade is to go with a 4cuft ported box and add 2 more 10d2 subs and another ks300.2 amp. Also upgrading the 6x9s to a component set and a ks 300.4 to run mids. A 4 guage wire upgrade and a Kinetic power cell. I also am going to finsh the trunk out and am looking at the new Alpine units that don't have a cd, but just a hard drive. I play drums for a living!