Here's a link to a picture of the push in valve cover breather cap in the draft tube's old home. (please let me know if you can't see it and I'll find another way to post it)

http://www.kodakgallery.com/PhotoView.jsp?&collid=870158533106&photoid=348258533106


'51 Chevy 1/2 ton w/'62 261, HEI, offy, fentons, dual carter/webbers, t-5 & 12 bolt posi