Looking to get away from the 4 thread heads on my 02..... I am thinking of picking up a pair if these, and a 2.3 KB ( in the future)... Any experience with these heads? I believe the stockers run around 190cfm.... These heads run 250-270 ish.... I know my high mileage short block would need to be upgraded ( rods,etc).. Other than that I would think this would be a pretty solid combo.