Welcome to the club! If you haven't already, be sure to check out the buy/sell area. You could also try gtfours.co.uk and gt4oc.net although shipping those large parts may be too expensive.
A great resource is www.toyodiy.com
for finding part numbers.
Right Fender: 53801-20860
The hood and fenders are shared between the ST165 and the ST/AT16x so you might have luck finding the parts you need from a wrecker or a FWD model.