You're looking to ask people questions about all the different Celicas, right? You need to do a post on each of the forums here, for gens 1-7. There are some other forums out there for all the gens as well; you might try:http://www.toyotacelicas.com
Also, search for some others.
My advice is, develop a set of questions and post them in the forum for each generation. There are plenty of people on this particular forum who know 7th gen well, but not necessarily so much on earlier gens, and who certainly don't own previous gens.