D I D Y O U B L E E D I T?

sounds like your whole nightmare issue has transpired due to lack of maintenance. Hoses, belts, waterpumps, thermostats are COMMON maintenence items not something that needs attending to when it goes bad.

Not to get on you but for you to look through your system and try to see what the problems are...IE: you replaced the head and its still over heating....HELLO? somethings still wrong and maybe it wasnt the head at all (well probably after an over heat procudure).