I think $15k is an ok price. Like you said yourself, getting money back on aftermarket parts is a pipe dream. You sound like you have a great clean setup. And if the right buyer comes along who appreciates it and is willing to pay that, its not impossible. But lowering the price slightly might get it off your hands faster. Remember, there have been instances where an '02-'03 Si have sold brand new from the dealer for $15k, because of a real lack of interest in the cars. Not only is your Si a specialty market because of the parts, but its a specialty market because fewer than expected % of the population appreciates the design. Get some nice pics, post them up with your thread. I would suggest HAN, and Honda-Tech. Good luck.