I love the wheel setup. But I could not catch what you said the offset you are running front and back. I like the staggered setup 15 on the front and 16 on the rear.
No cam lobe wear, just make sure you warm up the engine before you hit lift, there are a few write ups on how to slow down the process of cam wipe. And yes, stock internals. Tuning is the biggest reason why this engine is still alive
