If they can make a civic CHD then you can make your celica RHD. I am also very interested in a RHD celica too. In japan they had TONS of versions of our 3rd gen celicas. I wouldnt mind a JDM GT-TR

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And about the Celica XX. You missed out about 2 years ago. I found a JDM RHD imported Celica XX for sale on eBay. It was located in Florida and it was in very good shape and only sold for $2000-$2500. It also had those cool fender mirrors and everything. I saved the pics of it on my computer and if you want i can post them sometime on here.
Also, the Celica XX had a number of motor options. Turbo options too.