well since i have my tranny off i thought i'd get a lightweight flywheel. the only problem is they are for the larger 90-91 clutch. can i just buy a 90-91 clutch disc? will it work with my 89 pressure plate? i have a exedy stage 1 clutch/pressure plate with less than 1000 miles on it and dont want to buy a whole new clutch kit just to run a lighter flywheel. so can the 89 pp be used with 90-91 clutch/flywheel?