Valve Springs

Anyone know what lift the gt40 valve train is good for lift wise???

I seen it somewhere before, but when ya need it ya can't find it...

I'm gonna be upgrading my came thi winter along with a port and polish on the iron gt40's and the gt40 lower on my 94 cobra.................

Also, any good street cams suggestion? I don't want something that screams topend, I want torque more, no alphabet cams.......