also look at this thread on cam tests done by one of the biggest evo shopped in the U.S.
remember i currently have the hks 272 and im getting the kelford 272 installed
now if you compare all the graphs and gain of each cam set you can see that the kelford's are the best cams they give you the power of a bigger 280 duration cam, but dont compramise the spool or idle characteristics of the car.
also look at how much hp was gained from hks 272 to kelford 272 its rediculous
http://forums.evolutionm.net/evo-eng...-cam-test.html