Best rocker shafts??

Where is the best place to buy rocker shafts for "995" Econo W2 heads? I am trying to read up on them, but you know how the internet is lol. These are the long valve version, and the rockers are the blue MP (well, there will be 4 RH intakes that are gold Cranes, from what I have been told the only difference is the color). I read that the hold down bolts may be a different size than factory? I don't have them in my hands, yet, so I cant tell. Also, what hold downs would I need? All I know as of now, is the stands are the oem type but thet would be machined offset for the longer valves. Not too sure where to go from there.