340/360 J head rocker adjust stud

x2 on the adjustable rockers. The came from the factory only on the 67-68 273 but will bolt on to any LA v8. Here's what they look like:
http://www.ebay.com/itm/231470944418?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1558.l2649