I just got my Jim Pace 330hp crate today. I talked with them about the 385 fast burn and they said there was a couple things you could add to boost it way over 400hp - I think that was the Hot cam you are talking about. (I didn't discuss it much because it was outta my league)
I also got the Hedman headers from Jim Pace. ($169 for painted, $369 for coated) They are "shortys" for ground clearance. Jim Pace guys said the old "round" port headers would fit, but not seal. The Hedmans have "D" shaped ports for the Vortec heads. Their prices are really reasonable for all the performance parts.