MrR33: First peice of advice I can give you is ignore the critics that think your price is to high. There are many critics out there that think they can buy it from some other guy or direct from japan at a fraction of the cost.
As a guide, GOOD quality low km' series 2's (there arent many in the good category) sell for up to $29,000 at a dealer - bear in mind they provide warranty and some peace of mind as opposed to buying private.
If your car contains minimal mods, I would advertise for $25,000
You know what condition your car is in and therefore how much you should get.
I recently sold my 1996 model and was fortunate enough to find a buyer that appreciated the car and loved it and got the price I wanted. (> $30K). The car had 60,000kms on the clock, recaros, 18 inch wheels, carbon bonnet etc.
Hopefully you arent in a rush to sell, the market isnt easy at the moment either
Best of luck with the sale