I am planning a system for my 2003 Mustang vert. I am so confused on amps that it's driving me nuts. Here's what I want to do: Eclipse HU (probably the CD8454) Focal 165W (already have these) 2 Focal 5WS (either in the back or in the front leg area - I have these) Sub if necessary (probably a 10-12" JL W6) I'm going for sound quality. I would like to do a US Amps TU-4360 tube amp (4 channel) which would give me 75 wpc into 4 ohms (90 into 2 ohms) for the Focals. Is this enough? Are they 2 or 4 ohm? I would then do a JL Audio 500/1 for a sub if I needed it. So, is 75 wpc enough? I am open to considering other amps. Your advice is appreciated. Thanks!!