stock camshaft specs

[SVXMAN2001]

I am having a performance valve job done on my cylinder head and the machinist wants to know the specs of our stock camshafts. I did a little research on the network and there is A LOT of information on camshafts, in fact too much for a novice to be able to decifer what info i really need.

So that being said, what camshaft spec info will my machinist need to complete his job? I was planning on keeping the camshafts stock to avoid reliability issues and having to convert to solid buckets...now that i think about it, is it possible to obtain a more aggressive camshaft without sacrificing too much daily drivability? thanks in advance.