It can be fixed @ abround $300+ dollars. There are many better solutions out there for around that same price, for instance - a new deck with at least 2 pre-outs so you can run some RCAs and splice them into the low-level inputs on yr factory amp. Personally, I'd gut all the OE Ford audio equipment - the radios are dismal and factory paper 5x7's are just gross...ditch the MACH amps too! Get a nice deck (Alpine, Eclipse, Clarion) and some nice speakers you can beat the heck out of (Boston Acoustics, JL Audio, MB Quart) and you'll have a system that costs less than the MACH system and sounds alot better. Just remember to use quality speaker wire and get it installed right.