I purchased my Holley-Weber two bbl. progressives from Tom Langdon I think the were about $80 each.
http://www.stoveboltengineco.com/ I have the 3/4 M4F grind from Patricks. I am running a stock piston and as for the head I took it into a shop that does all of the engines for Patrick's. I think all they did was drill the steam holes. I also bored mine .030 over.
