do i need a choke?

[jerome]

i've been looking at pics of the HP carbs and it doesnt look like theres bosses where the choke would be. so i understand you could make posts, but how do you attach it to the main body?

I took machine shop at school here last semester and have the basic skills with mill and lathe to make the posts, i'm just not sure on how to attach them, is it by welding, or are you attaching them to other points on the carb?