340 Cam Change - Lunati vs. Comp.

All the Lunati VooDoo cams are spec'd with dual springs, and all duals require machining. I think the XE268 Comp is the largest "modern" lobe design cam I'd use with stock heads because you can get away with a single spring and there's not enough lift to worry about guide clearance. If you are very careful and pay attention to springs you can get a single spring that will run fine with the samller VooDoo grins but your head guy needs to do his homework.
MRL - What you said about taking responsibility for failures was exactly what I was getting at.