Titanium rotor/disc bolt question

[FuelCooler]

 I am in the process of (carefully) taking all three brake rotors off my V11 Sport and like to use titanium for my front and rear rotors bolt replacements. My guess would be similar year Ducati, or mid 1990s era FZR 1000. I know the front and rear bolts are different sizes on these Guzzi. Any one have direct experience with this? 

  Thanks!
               

[FuelCooler]

Okay, fronts measure M8 x 1.25 and are 20 mm long. Rears are also M8 x 1.25, with a 20 mm long threaded portion, then a 4.5 mm long shoulder that is 10 mm in diameter. If that jogs anyone’s memory! Easier to just contact Race Ti? 
 I will be forced to buy more titanium if I go that route……….you know, to err, justify the shipping.