Ignition Plasma Booster?

5.0 or MMFF did a write up a while back where they slapped one on a 4.6 and it did produce the gains they claimed it would. I remember the mag saying that hp/dollar, it's the best deal going. I don't know if this would apply to the pushrod engines, though. I'm interested to hear more about this too.
 
I dont see it doing anything different that an MSD 6AL or any other ignition boxes do and you dont get any big gains on a mild setup with those. I know alot of Modular guys tried them when they came out and alot said it didnt do anything. I saw one on a high powered SOHC turbo car last night on a website but who knows if it actually does anything.