Because of the lifter angle on the sb mopar...you lose some lift, maybe not enough to fall into the accepted tolerance, but I can tell you right now...you won't see .536 at the valve with a 1.5 rocker.
I think he is using the magnum valve train so it will be 1.6.
Also I don't know if those specs are 1.5 or 1.6 on the cam card. If they are at 1.5 the lift will be increased.