today as i was replaceing my coils, the last coil to go on the bolt cracked as i was removing the coil, its a 2004 so i guess the bolts are weakened, but now my problem is i have no was of securing the coil on the bracket because there is not enough bolt for the nut to be tightened onto, any ideas?

 

It happened to me last year. Take out the coil holder and bang the broken bolt with a hammer. Bang it really hard.

 

Hammer it or drill it out and replace with a new one, or buy a replacement bracket from Mazda for about $25.