How to replace the evaporator core

Yes, would like to try and just looking for a few tips to make it smoother

The flat rate time for this job is 6 hours PLUS, and the entire instrument paneldash/steering wheel has to be removed then the main cross beam/steel tube.my heater core went out on my 2000 F150 6 or 7 years ago.(heater core and evaporator core in the same box inside the dash).i wanted to attempt this fix myself.i looked on alldatadiy and that changed my mind.i ended up taking it to a local,family owned radiator/a/c repair shop,that's been here 60 plus years.it took 2 people 8 hours to complete this job,and they do this every day.so that's my story.if you want detailed information,you will have to go to www.allDATAdiy.com! it's not free! it's $26.95 for 1 year and you download it to you computer.lots of shops use this.good luck with it.