http://www.4g61t.org/forum/viewtopic.php?f=16&t=30854
Directing you over to my post of information. It should help a bit. The Tiburon is actually almost a whole different platform of car from the Scoupe/Excel. Shocklingly it seems that the closer in platform is the Hyundai Accent because that's what replaced the Excel. I haven't started researching similarities with the Accent, but soon will now that my brain's picked.
Where the C10 style Colt is similar, the schematics for the platform were used and built by Hyundai to make the Excel, Scoupe, and the badge engineered Mitsubishi Precis. There are minor differences here and there.