Roller Cam Setup and Adjustable Rockers - Ever heard of these ?

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http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=250403454615&sspagename=STRK%3AMEWAX%3AIT&viewitem=   Cam Setup

Says "Crower Roller Cam for 1957-66 Buick Nailhead. This is a full Setup, The cam, Lifters, Pushrods, timing set and even the fuel pump Cam."

Anybody ever heard of this ?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=250403448404&sspagename=STRK%3AMEWAX%3AIT&viewitem=  Rockers

Both are no reserve auctions

[WkillGS]

I know Isky had roller cams avail back in the day. I didn't know Crower had them.  TA performance is supposedly working on roller cams for the Nailheads.

Some Nails from the 50's had the adjustable rockers. Also aftermarket ones were made by Gotha.
They're cast iron, so they're heavy. They also don't have as much ratio as the later alum rockers, so they'll produce less valve lift.
They still fetch $300 on eBay...

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Thanks Walt. Never knew that anybody produced those.
Anybody here bid on these items ?
Roller cam setup sold for $597.50 and the rockers for $260.00.