Build suggestions for 340?

The stock cam is not noticeably peaky, with adequate compression. The power curve is at the right place and the 114LSA is about right.
But it won't make 400hp. With open-chamber iron heads on pump gas;maybe 300 or a lil more.
....
BTW; it is only new years day on Pope Gregory's Calendar. Ok so
Happy January First!
lol.
Thanks for all the detailed information - now I need to go learn about VP!
-Jim