just bought a 78 z28 with a 400 sb stroked 406, has turbo 350 with a 3800 stall in it now was a 4 speed car at birth. Any how car is pushing 600+ hp I bought a bw super t 10 4 speed to complete the change back. Been awhile since I have messed with a manual so have questions. first as I remember and correct me if I am wrong or you have another opinion but the super t 10 is better trans than the muncies? Well I bought a new shifter for it a hurst comp. I need more info on flywheels. I need to select one that will hold up to motor and not break the bank either. what is external and internal balance? also what works better in my application as far as material. bulliet and steel and others?? also need help in clulch selection?? this car will be used on street with a trip to race track now and again. like I said 600 hp with a 456 gear in rear. So any help would be nice. Thanks Paul