95 ford tbird heater core replacement

Hi everyone. I have a 95 ford tbird v8 and my heater core needs replaced. Question is do i have to take dash apart to replace it or is there some sort of shortcut? also if i do indeed have to take dash apart as i am suspecting, how long of a job would this be? thanks for the help

Tech help (http://www.automotiveforums.com/vbulletin/showthread.php?t=286435)

Heater core, 96 TBird LX (http://www.automotiveforums.com/vbulletin/showthread.php?t=901878&highlight=heater+core)