Good evening! I'm planning on doing a PI swap on my engine this weekend. I sent some used pi heads I took off a donor motor to the machine shop to get rebuilt, they'll be installing some Comp 268 cams with upgraded valve springs and retainers. I thought I had read that the 268's would work with the stock PI bottom end without PTV issues... however I read one article that said that any upgraded cam with the NPI stock short block would have issues... can anybody tell me if I will have PTV issues? I most likely will degree the cams myself. Thanks!