Did you goto a junkyard and look? That's where I would start. There's one 15 minutes from me that usually has 5-6 st162's laying around
I have been to all the ones in my area (murfreesboro/nashville in Tennessee) Nothing! The dealer wants $300.00 While there I did have a weak moment and bought the pieces that run along the bottom sides of the car. With hardware I spent $220.00 and pissed of the wife ;( Had to do it though. I have never seen those pieces that were not rusted inside of the plastic housings.
http://www.gt4-racing.eu/index.php/toyota-celica-st162/fiberglass-fenderswings but that's expensive as hell too...but fibreglass!
Hey 4th Gen...Wonder if we could work something out...Maybe you getting a fender and mailing it to me...Where are you located?
Id check around for some aftermarket body suppliers. Maybe ask a few local body shops where they get their parts. Back in the day, I bought a set of aftermarket fenders for $100 each. But that had to be 8 years ago.
I found a place here that sells them for $144, I dare say shipping to you would be a killer though.... http://www.quicksales.com.au/ad/toyota-celica-1988-89-st162-guard-r-h/1567100
Thanks guys. Finally found a yard 1200 miles away from me willing to ship. Cost me $180. I am well pleased!