I've installed a 89 Civic clutch disc along with an 88 PP and flywheel. Reason being is because I am cheap, and as for the 89 clutch disc...it's because I have a DOHC ZC transmission that uses the 20 spline shaft. While I was installing the clutch though, I noticed the disc from the 89 was a little bigger. It still fit inside the PP housing though, but was a little bigger than the friction area on the flywheel. Does anyone know what kinds of problems will arise? I'm not worried about the durability of this setup, because I plan on getting a clutch kit pretty soon(just needed something to get my car running ASAP), but just need it to run for about 1-2 months.