Keep the cam. That's a very proven cam. Once on the highway a 4k stall or stock will drive the same. The beauty of lockup. If you have plans for an 80e later do the 4.10s atleast. Just because you wouldn't dd the setup doesn't mean that it isn't done daily many. And if he's taking it to all these shows I doubt it's a dd. A big cam and stall have great manors if you get a good tune.