The Mini windshield/windscreen has been the same shape since the car was first introduced in 1959 but that is no reason for you to still be using the original glass! Stone chips, cracks and fogging are easy to fix - replace the glass! As most of you know, it is foolish to try to replace the glass without also replacing that dried and hard rubber seal.
This great kit includes the glass (24A2236), the seal (CZH5342), 24A1466, and a new plastic lock strip (24A1466)!
Consider also the 18G468 Windshield Fillet Tool to make the job easier.