Just curious as to what caused the cam to wipe out like that. Heat?, low oil pressure? I've seen where the lobe rounds off but that looks like the lifter ran dry on the lobe.
Sorry for the delayed response, but I don't check these forums every day. To your question about the cam and lifters; It was caused by running conventional oil (low zinc) with high spring pressures. The owner of this engine did not realize that oils have been "dliuted" in the name of emissions, and didn't spend the extra money on good racing oil with high levels of ZDDP.
It's also interesting to note that this cam and lifters came out of a Barton Hemi and it was still extremely fast - even with the wasted valve train...