As has already been said... do a search on the "Members Rides" and other sections of this forum for ideas. Also search on Google and see what's around and stuff like that.
For the coupes you'll need to search for TA22 and RA23, for the liftbacks you'll need to search for RA25 and RA28. They're all the 1st Gen Celica models, which I'm assuming you're after.