thoughts on the edelbrock sp2p manifold

will i have any vacuum issues with the performer......i was thinking the same thing and the guy who helped me with the set up design told me to only use it only if i upgrade the cam and heads. i know the performer is a better intake manifold.....the reason they stopped making them is that they had detonation issues when running 9.0 compression and since they were edelbrock, people thought they were performance manifolds instead of gas crunch manifolds. they would buy it and it wouldnt work with anything other than stock. which is all i will ever run with a 318. i would use a 360 for performance...or a 340.
the off road crowd is 50 50 on the sp2p for low end torque. they never run more than 4000 and i usually wouldn't either. the performer was rated at 6000. my 318 will never see 5000 much less 6000. thoughts on this?