I was only kidding with the fuel pump. Once a car starts running into the 13's it seems they will always benefit from a better fuel delivery system.
Yes I know people get into the 11s with an old mechnical pump, but by simply adding an electric pump they will still go faster. I dropped .5 by running an electric pump.
As for the BBC vs. SBC debate- my vote is for the BBC.
I've got my L79 tuned pretty well, but 13.2 is the best she goes. A big block may not be able to pull my 1.7 60's foot times, but they usually walk me on the top end.
Paul