It is a custom ground solid flat tappet from Scott the Mad Porter from this forum.
His name is Scott Johnson, here is the website
http://www.reincarnation-automotive.com/.
I bought a package that had the cam, lifters, valve springs, retainers and locks. I have been very happy with the purchase. (Sorry, I can't find my receipt and don't remember how much I paid). I know it was reasonable though.
Another Great guy to deal with is Mark McKeown from this forum. His site is mmeracing.com .
A custom ground cam doesn't cost much more than an off the shelf cam. Custom ground is the better way to go.
I've dealt with both people and would happily deal with both of them again

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Cheers.
Danford1