A very good friend of mine installed a centex clutch in his TC3 many years ago. The car ran very well. He was running a NS12S3 in his TC3 without a problem. When he sold it to another friend, he installed a TZ12 5 port and again the TC3 did pretty good. Now both friends have graduated to Mugens and Xrays and have not looked back at their old TC3.
Just like eveyone else in this thread, I wouldn't put the money into a centex. It's time to upgrade. I like Serpents. 720 08 works great!