I believe Steff and 340rick are running larger cams. I believe Steff was trying to increase the height of his rocker stands when he split one and then Member Jerry came to the rescue and made billet stands that look awesome.

Those guys would probably do a better job of answering your question

I bought my intake from Mike Ware for $550 but now I see it being sold for almost 800 from modern muscle. I would call Mike before buying it from those other guys. The word is the tall plenum is really needed