touf

Hi Guys, I'm Touf from Indonesia. I have Nissan Terrano 07 in here, basically have the same enginer with 720 and Pathfinder 80's. I want to upgrade my stock cams with Nissan Z 4 Cyl High Energy 260S Cam. I use that car for offroad in weekend and also daily use on the other days. I have several question prior installing that comp cams, 1. Do I have to upgrade the follower and valve spring? 2. if yes, where can I get that items, because it's hard to find those in here. Need your help please, thanks in advance touf