well if you swap in the 96-98 intake cams, and the cobra intake, it will actually make a slight margin more than a cobra because they dont have a forged crank like the cobra does.. (takes 10lbs off the crank)
but the benefit of a 4v short block on PI heads is that the compression is right under 12 to 1 with this setup, and it makes for a hellaciously fast, snappy combo..