Rev-N-Nator vs. FBO HRR688 ignitions

drewmac said
Has anyone used the HGRR688 ignition box? I have heard good things about the Rev-N-Nator but the HRR688 looks interesting. Any thoughts on it or a comparison would be welcome.

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I run a FBO box and distributor on my 340
They work very well, no issues.
Don was a big help and a hell of a nice Guy.
I would recommend.