I talked to Tara at Hall a couple of months ago and they have the 351C 4V Weber intakes in stock for around $600 IIRC.
I also talked to Steven at Pierce and their pn K9110 351C 4V Weber set up is $3255.00. He said they use the Hall manifold.
There was a post some time ago about the Aus made IDF manifold for 2v or 4V heads but I don't know what ever happened with that.
I think Joules recently sold a Weber set up.
There are a number of Weber and IR EFI suppliers. Here is a short list of some. I don't know if all of them sell a 351C set up or not.
http://www.verycoolparts.com/weber.htm
http://www.webercarbsdirect.com/.
http://www.webercarburetors.com/
http://www.redlineweber.com/
http://www.piercemanifolds.com/products.htm
http://www.racetep.com/weber/v8webnew.htm
http://www.twminduction.com/
Here are more links where they have been discussed here on the PIBB
http://pantera.infopop.cc/eve/...220026183#2220026183
http://pantera.infopop.cc/eve/...562/m/8300093835/p/1
http://pantera.infopop.cc/eve/...562/m/6450019764/p/1
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