I would bet that those nascar engines would be better left alone--yes..they are very high RPM packages that have it all moved up to the top--makes them hard to get a good drag race converter dialed in but...they are so well designed -to the point where I would think you would really screw up the combo asking some outfit that may have very little experience with that engine --for drag race use-- to make a good decision on a new grind
I bet it goes backwards with new cam and that you have to start all over again with converter selection--again--very few converter builders with enough drag race experience with those engines.
They are everywhere and cheap--my neighbor has one that is running great in a drag car but that was after a hard season and Lots of $$$$$ spent on converters.
What do you hope to gain? And is a cam the way to make that gain? I bet converter is best way to attack going faster.
All that being said I would call Arrington and stick with whatever they say
just my two cents worth