Phil :
BTW, I just looked up the K&L part number for the rebuild kit. The early ABS models and the non-ABS models use the same kit ( same size MC ) , but the later ( ABSII ) models don't use the same kit. In fact, K&L doesn't have a kit for the 99-02 ABS model. So , it looks like you lucked out by having the ABSII MC.
But according to this
Vintage Brake website , a 11 mm diameter MC would work even better for a non-ABS model. With a 12.7 mm diameter piston, the ratio improves from 14.9 to 18.1. But with a 11 mm diameter MC, the ratio would be 24.1 , which is closer to the recommended ratio.