fried infinity amp...any way to use an aftermarket one?

ok so my friends 2000 eclipse gt leaks water occasionally, and one time a little earlier this year it leaked enough to where the was almost an inch on the floor pans. the infinity amplifier under the seat is ruined, well all but 1 channel. i was wondering if there was any way to put in an aftermarket 4 channel without having any speaker wire to use the hi-level in feature or a hi-low converter (speaker wire to rca converter). any suggestions would help. thanks

no one knows?...

As far as an aftermarket amp, I dont kno of any that uses a dim plug from amp to cd deck, if your friend is interested I have a stock infinity amp from my 01 gt that I dont need. 15 bucks plus shipping and its his .