New cam in the 5.7

Hey all. My son just called me asking how hard it is to change the cam with motor in the car. His car is a 2009 Challenger R/T. It has a super charger with intercooler that we installed last year. I told him what I could remember what all was in the way. But if you guys could help us out that would be great. The reason I ask this is, he and his car are located in Ft Bliss, TX. His plan is to purchase the parts, have them shipped here for us to change it out within a few months. SO all help is appreciated. Thanks.