SQ and hifonics... lol plz, even though i run hifonics, they are budget power, not quality power, not very good efficiency and its a power hog. Look up sundown, DC audio, Digital Designs, Incriminator audio, Mmats, Soundqubed/audioque, CT sounds if you want high quality build, power and efficiency. You can run 1 ohm like nothing all you would need to do is big 3 upgrade (google/youtube this up if you dont know) with 0 gauge wire. Heat is mainly from low voltage drop, if your electrical system gets a small boost then your voltages should stay high enough so you dont have to worry about it. Its also never truely 1 ohm since your going to have impedance rise.