After getting back from riding the other day i noticed i have a crack in the head of my bike near were it meets the block, I am wondering if this is something that a shop might be able to fix? If not how hard is it to pull the head and put new one on? Do i have to pull the motor to pull the head? and also i have heard that the 426 head will swap and if so what years will swap and is there any other head that will fit as well? Any input would be great i am so upset cause i love my bike!!!