[ratsnst1]

I have the dynalite 4 piston on the 12.19 roters, then switched to the 6 piston, it was a big difference, and used the 7/8 front master cylinder, with a tilton balence bar works very well. The 6 piston will bolt up to your 12.19 roters.Just make sure you do the embedding process on your pads.