i run stock PRs on my cam....Of course, I'm just not sure how much supporting work needs to be done. Hopefully one of the 7th gen guys will chime in, but I seem to recall a need for different length pushrods on those motors when modifying the valvetrain. Not sure if that is only with cam swap or not.
may be necessary depending on which rockers you go with.
yella terras come with the new prs, theyre expensive, but worth it imo
most guys go 1.9s, gain will be similar to a stage 1 cam, but a little less. some stagger the rockers. 1.84s/1.9s